diff --git a/sandbox-adaptions/admin/style.css b/sandbox-adaptions/admin/style.css
index 78ed8ce..df875aa 100644
--- a/sandbox-adaptions/admin/style.css
+++ b/sandbox-adaptions/admin/style.css
@@ -13,12 +13,26 @@
   padding-left:12px;
   padding-right:12px;
 }
-#postbox-container-2 .jcf_edit_field{
-  width:50%;
+@media screen and (min-width:767px){
+  #postbox-container-2 .jcf_edit_field{
+    width:50%;
+  }
+}
+@media screen and (max-width:1500px){
+  #postbox-container-2 .jcf_edit_field.field_textarea,
+  #postbox-container-2 .jcf_edit_field.field_table{
+    width:100%;
+  }
+}
+#postbox-container-2 .jcf_edit_field .jcf_edit_field{
+  width:100%;
 }
 #jcf_fieldset-masse .jcf_edit_field{
   width:33%;
 }
+#jcf_fieldset-newsdata .jcf_edit_field{
+  width:100%;
+}
 .jcf-get-shortcode{
   margin-right:0;
 }
diff --git a/sandbox-adaptions/sandbox-adaptions.php b/sandbox-adaptions/sandbox-adaptions.php
index ec7d999..5f1d93a 100644
--- a/sandbox-adaptions/sandbox-adaptions.php
+++ b/sandbox-adaptions/sandbox-adaptions.php
@@ -48,14 +48,39 @@ function sandbox_setup_site() {
 
   // init custom widgets
   add_action('widgets_init', 'sandbox_widgets_init');
+  // disable emoji support for more pagespeed
   add_action('init', 'sandbox_disable_emojis');
+  // remove unused default taxonomies
+  add_action('init', 'sandbox_unregister_taxonomies');
 
   // load admin styles
   add_action('admin_head', 'sandbox_admin_styles_load');
 
+  // remove WLW
+  // https://wphacks.wordpress.com/2008/08/27/wordpress-tip-remove-wlw-rsd-link/
+  remove_action('wp_head', 'wlwmanifest_link');
+
+  // remove xml-rpc edit link
+  remove_action('wp_head', 'rsd_link');
+
+  // Remove generator info
+  // https://bhoover.com/remove-unnecessary-code-from-your-wordpress-blog-header/
+  remove_action('wp_head', 'wp_generator');
+
+  // remove wp-sitemap.xml when using a xml sitemap plugin
+  add_filter('wp_sitemaps_enabled', '__return_false');
+
   // quick fix for https://wordpress.org/support/topic/jqeuery-error-live-is-not-a-function/
   add_action('admin_enqueue_scripts', 'sandbox_jcf_admin_fix');
 
+  // add a position field to user profile
+  // add_action( 'show_user_profile', 'sandbox_user_profile' );
+  // add_action( 'edit_user_profile', 'sandbox_user_profile' );
+
+  // save/update position user profile field
+  // add_action( 'personal_options_update', 'sandbox_save_user_profile' );
+  // add_action( 'edit_user_profile_update', 'sandbox_save_user_profile' );
+
   if ( !is_admin() ) {
     // add usefull classNames
     add_filter('body_class', 'sandbox_body_class');
@@ -77,6 +102,9 @@ function sandbox_setup_site() {
     // remove lazy block wrapper container markup in frontend
     add_filter( 'lzb/block_render/allow_wrapper', '__return_false' );
 
+    // custom archive query settings
+    add_action( 'pre_get_posts', 'sandbox_archive_query');
+
   // Admin pages related stuff
   } else {
     // add usefull classNames
@@ -84,6 +112,11 @@ function sandbox_setup_site() {
   }
 
   // plugin integrations
+
+  // lazy block Handlebars helper
+  add_action('lzb_handlebars_object', 'sandbox_lazyblock_handlebars_helper');
+
+  // listo order for cf7 select input
   add_filter('wpcf7_form_tag_data_option', 'sandbox_listo_ordered', 11, 1);
   // listo uses an iso3 country list
   // country iso2 to iso3:
@@ -91,16 +124,21 @@ function sandbox_setup_site() {
   // all countries and phone-codes (iso2):
   // https://github.com/ChromaticHQ/intl-tel-input/blob/master/src/js/data.js
 
+  // handle required attribute
+  add_filter('wpcf7_form_elements', 'sandbox_wpcf7_form_elements');
+
   // filter values of form tags to email
   add_filter( 'cf7sg_mailtag_email-updates', 'sandbox_cf7_mailtag_email_updates', 10, 3);
 
   // remove layout from "cf7 smart grid plugin"
-  add_action('smart_grid_register_styles', 'sandbox_smart_grid_register_styles');
-
+  // add_action('smart_grid_register_styles', 'sandbox_smart_grid_register_styles');
 
   // use really simple captcha in contact form 7
   // add_filter('wpcf7_use_really_simple_captcha', '__return_true');
 
+  // CF7 gated content with custom field
+  add_filter('do_shortcode_tag', 'sandbox_cf7_gated_content', 10, 3);
+
 }
 
 // Check if function "wp_body_open" exits, if not create it
@@ -121,28 +159,75 @@ function sandbox_image_sizes() {
   }
 }
 
-// custom image sizes settings
+/**
+ * custom image sizes settings
+ *
+ * @see https://en.wikipedia.org/wiki/16:9_aspect_ratio
+ */
 function sandbox_get_image_sizes() {
 
   $sizes = array();
-  $crop = true;
-  $ratio = '16_9';
-  $ratio_opts = explode("_", $ratio);
 
-  // Standard (with sidebar)
-  $width = 805;
-  $height = absint($width*$ratio_opts[1]/$ratio_opts[0]);
-  $sizes['sandbox-default'] = array('title' => __('Standard (with sidebar)', 'sandbox'), 'args' => array('w' => $width, 'h' => $height, 'crop' => $crop));
 
-  //Full width (no sidebar)
-  $width = 1090;
-  $height = absint($width*$ratio_opts[1]/$ratio_opts[0]);
-  $sizes['sandbox-wide'] = array('title' => __('Full Width (no sidebar)', 'sandbox'), 'args' => array('w' => $width, 'h' => $height, 'crop' => $crop));
+  // larger thumbnail
+  $sizes['thumbnail-semi-large'] = array(
+    'title' => __('Thumbnail-Semi-Large', 'sandbox'),
+    'args' => array(
+      'w' => 640,
+      'h' => 640,
+      'crop' => true,
+    ),
+  );
+
+  // Standard (with sidebar) 16:9
+  $sizes['sandbox-default'] = array(
+    'title' => __('Standard (with sidebar)', 'sandbox'),
+    'args' => array(
+      'w' => 800,
+      'h' => 450,
+      'crop' => true,
+    ),
+  );
+
+  //Full width (no sidebar) 16:9
+  $sizes['sandbox-wide'] = array(
+    'title' => __('Full Width (no sidebar)', 'sandbox'),
+    'args' => array(
+      'w' => 1280,
+      'h' => 720,
+      'crop' => true,
+    ),
+  );
 
-  //Hero image
-  $width = 1920;
-  $height = absint($width*$ratio_opts[1]/$ratio_opts[0]);
-  $sizes['sandbox-hero'] = array('title' => __('Hero image', 'sandbox'), 'args' => array('w' => $width, 'h' => $height, 'crop' => $crop));
+  // Hero image 16:9
+  $sizes['sandbox-hero'] = array(
+    'title' => __('Hero image', 'sandbox'),
+    'args' => array(
+      'w' => 1920,
+      'h' => 1080,
+      'crop' => true,
+    ),
+  );
+
+  // Hero image 16:9
+  $sizes['blog-hero'] = array(
+    'title' => __('Hero image', 'sandbox'),
+    'args' => array(
+      'w' => 1500,
+      'h' => 476,
+      'crop' => true,
+    ),
+  );
+
+  // keep aspect ratio
+  $sizes['semi-large'] = array(
+    'title' => __('Semi-Large', 'sandbox'),
+    'args' => array(
+      'w' => 640,
+      'h' => 640,
+      'crop' => false,
+    ),
+  );
 
   return $sizes;
 }
@@ -165,7 +250,7 @@ function sandbox_login_enqueue_scripts(){
 }
 
 // init custom widgets
-function sandbox_widgets_init(){;
+function sandbox_widgets_init(){
   register_widget('sandbox_faq_nav_widget');
   // register_widget('sandbox_events_widget');
   // register_widget('sandbox_social_widget');
@@ -218,6 +303,11 @@ function disable_emojis_remove_dns_prefetch( $urls, $relation_type ) {
   return $urls;
 }
 
+// remove unused default taxonomies
+function sandbox_unregister_taxonomies(){
+  register_taxonomy('category', array(), array('show_in_nav_menus' => false));
+}
+
 // adds usefull body classNames
 // @param  $classes  array
 function sandbox_body_class($classes){
@@ -282,6 +372,39 @@ function sandbox_jcf_admin_fix(){
   }
 }
 
+// add a position field to user profile
+function sandbox_user_profile($user) { ?>
+	<h3>Extra profile information</h3>
+	<table class="form-table">
+		<tr>
+			<th><label for="twitter">Position</label></th>
+			<td>
+				<input type="text" name="_position" id="position" value="<?php echo esc_attr(get_the_author_meta( '_position', $user->ID)); ?>" class="regular-text" /><br />
+				<span class="description">Please enter position at your organisation.</span>
+			</td>
+		</tr>
+		<tr>
+	    <th><label for="linkedin">LinkedIn</label></th>
+	    <td>
+		    <input type="text" name="_linkedin" id="linkedin" value="<?php echo esc_attr(get_the_author_meta( '_linkedin', $user->ID)); ?>" class="regular-text" /><br />
+		    <span class="description">Please enter your LinkedIn username.</span>
+	    </td>
+    </tr>
+	</table>
+<?php }
+
+// save/update position user profile field
+function sandbox_save_user_profile($user_id){
+	if ( !current_user_can('edit_user', $user_id) )
+		return false;
+
+	// Copy and paste this line for additional fields. Make sure to change '_position' to the field ID.
+	update_usermeta($user_id, '_position', $_POST['_position']);
+
+	/* Copy and paste this line for additional fields. Make sure to change 'twitter' to the field ID. */
+	update_usermeta($user_id, '_linkedin', $_POST['_linkedin']);
+}
+
 // adds usefull post classNames
 function sandbox_post_class($classes){
   $classNames = array();
@@ -408,14 +531,55 @@ function sandbox_mail_from_name($name){
   return get_bloginfo('name', 'display');
 }
 
+// custom archive query settings
+function sandbox_archive_query($query){
+  if ( $query->is_main_query() && !is_admin() ) {
+    if ( is_post_type_archive('aktivitaet') ) {
+      //If you wanted it for the archive of a custom post type use: is_post_type_archive( $post_type )
+      $query->set('meta_key', '_date-begin');
+      //Set the orderby
+      $query->set('orderby', 'meta_value');
+      //Set the order ASC or DESC
+      $query->set('order', 'ASC');
+    }
+  }
+}
+
+/**
+ * lazy block Handlebars helper
+ *
+ * image sizes helper
+ * https://github.com/nk-o/lazy-blocks/issues/68
+ */
+function sandbox_lazyblock_handlebars_helper($handlebars){
+  $handlebars->registerHelper('wp_get_attachment_image', function($image, $size=null){
+    if ( isset($image['id']) ) {
+      return wp_get_attachment_image($image['id'], $size);
+    }
+  });
+}
+
 /**
  * Sort countries list by name instead country-iso-code
  * https://wordpress.org/support/topic/excellent-9087/
  */
 function sandbox_listo_ordered($data){
-  sort($data);
+  if ( is_array($data) ) {
+    sort($data);
+  }
   return $data;
 }
+/**
+ * Return all visible form elements
+ *
+ * Handle required input attribute
+ * https://github.com/netzgestaltung/contact-form-7-hooks#filters-in-contact-form-7includescontact-formphp
+ *
+ * @return $form_elements
+ */
+function sandbox_wpcf7_form_elements($elements){
+  return str_replace(' aria-required', ' required aria-required', $elements);
+}
 
 /**
  * filter values of form tags to email
@@ -437,6 +601,48 @@ function sandbox_smart_grid_register_styles(){
   // wp_deregister_style('cf7-grid-layout');
 }
 
+/**
+ * filter output of forms to add gated content if custom field is used
+ */
+function sandbox_cf7_gated_content($output, $tag, $attr){
+  // only for cf7 shortcodes
+  if( 'contact-form-7' === $tag ){
+    $form_id = isset($attr['id']) ? $attr['id'] : false;
+
+    if ( $form_id ) {
+      $form_file_download_id = get_post_meta($form_id, '_form-file-download', true);
+
+      if ( !empty($form_file_download_id) ) {
+        $form_file_download_url = wp_get_attachment_url($form_file_download_id);
+        $form_file_download = get_attached_file($form_file_download_id);
+        $form_file_path = pathinfo($form_file_download);
+        $form_file_name = $form_file_path['filename'] . '.' . $form_file_path['extension'];
+        ob_start();
+        ?>
+<script type="text/javascript">
+  ;(function(){
+    document.addEventListener('wpcf7mailsent', function(event){
+      var download;
+
+      if ( event.detail.hasOwnProperty('contactFormId') && parseInt(event.detail.contactFormId) === <?php echo $form_id; ?> ) {
+        download = document.createElement('a');
+        download.href = '<?php echo $form_file_download_url; ?>';
+        download.download = '<?php echo $form_file_name; ?>';
+        download.click();
+      }
+    }, false);
+  })();
+</script>
+        <?php
+        $gated_content = ob_get_contents();
+        ob_end_clean();
+        $output = $output . $gated_content;
+      }
+    }
+  }
+  return $output;
+}
+
 /**
  * Site Widgets
  * =============