diff --git a/h5p.classes.php b/h5p.classes.php
index 77130c3..7bf5cab 100644
--- a/h5p.classes.php
+++ b/h5p.classes.php
@@ -55,6 +55,13 @@ interface H5PFrameworkInterface {
    * @return string Path to the last uploaded h5p
    */
   public function getUploadedH5pPath();
+  
+  /**
+   * Get the list of the current installed libraries
+   * 
+   * @return array Associative array containg one item per machine name. This item contains an array of libraries.
+   */
+  public function loadLibraries();
 
   /**
    * Get id to an excisting library
@@ -243,9 +250,9 @@ interface H5PFrameworkInterface {
   /**
    * Delete a library from database and file system
    * 
-   * @param int $libraryId Library Id
+   * @param mixed $library Library
    */
-  public function deleteLibrary($libraryId);
+  public function deleteLibrary($library);
   
   /**
    * Load content.
@@ -1325,7 +1332,7 @@ class H5PCore {
    * @param array $content
    * @return int Content ID
    */
-  public function saveContent($content, $contentMainId) {
+  public function saveContent($content, $contentMainId = NULL) {
     if (isset($content['id'])) {
       $this->h5pF->updateContent($content, $contentMainId);
     }
@@ -1333,7 +1340,10 @@ class H5PCore {
       $content['id'] = $this->h5pF->insertContent($content, $contentMainId); 
     }
     
-    $this->h5pF->cacheDel('parameters', $content['id']);
+    if (!isset($content['filtered'])) {
+      // TODO: Add filtered to all impl. and remove
+      $this->h5pF->cacheDel('parameters', $content['id']);
+    }
     
     return $content['id'];
   }
@@ -1382,7 +1392,14 @@ class H5PCore {
    * @return Object NULL on failure.
    */
   public function filterParameters($content) {
-    $params = $this->h5pF->cacheGet('parameters', $content['id']);
+    if (isset($content['filtered'])) {
+      $params = ($content['filtered'] === '' ? NULL : $content['filtered']);
+    }
+    else {
+      // TODO: Add filtered to all impl. and remove
+      $params = $this->h5pF->cacheGet('parameters', $content['id']);
+    }
+
     if ($params !== NULL) {
       return $params;
     }
diff --git a/js/h5p-library-details.js b/js/h5p-library-details.js
index e274d22..73a996f 100644
--- a/js/h5p-library-details.js
+++ b/js/h5p-library-details.js
@@ -39,20 +39,6 @@ var H5PLibraryDetails= H5PLibraryDetails || {};
       $libraryInfo.append(H5PUtils.createLabeledField(title, value));
     });
     
-    var count;
-    if (H5PLibraryDetails.library.notCached !== undefined) {
-      count = H5PIntegration.i18n.H5P.NA;
-    }
-    else if (H5PLibraryDetails.library.content === undefined) {
-      count = 0; 
-    }
-    else {
-      count = H5PLibraryDetails.library.content.length;
-    }
-    
-    // List counter:
-    $libraryInfo.append(H5PUtils.createLabeledField(H5PLibraryDetails.library.translations.contentCount, count));
-    
     return $libraryInfo;
   };
   
diff --git a/js/h5p-library-list.js b/js/h5p-library-list.js
index cfadf0d..aeba889 100644
--- a/js/h5p-library-list.js
+++ b/js/h5p-library-list.js
@@ -38,7 +38,7 @@ var H5PLibraryList= H5PLibraryList || {};
       var $libraryRow = H5PUtils.createTableRow([
         library.title,
         library.numContent,
-        library.numContentDependencies === -1 ? t.NA : library.numContentDependencies,
+        library.numContentDependencies,
         library.numLibraryDependencies,
         '<div class="h5p-admin-buttons-wrapper">\
           <button class="h5p-admin-upgrade-library"></button>\
@@ -65,7 +65,7 @@ var H5PLibraryList= H5PLibraryList || {};
       });
       
       var $deleteButton = $('.h5p-admin-delete-library', $libraryRow);
-      if (library.numContent !== 0 || library.numContentDependencies !== 0 || library.numLibraryDependencies !== 0) {
+      if (library.numContent !== '0' || library.numContentDependencies !== '' || library.numLibraryDependencies !== '') {
         // Disabled delete if content.
         $deleteButton.attr('disabled', true);
       }
diff --git a/js/h5p-utils.js b/js/h5p-utils.js
index d8faf68..3004c95 100644
--- a/js/h5p-utils.js
+++ b/js/h5p-utils.js
@@ -7,14 +7,20 @@ var H5PUtils = H5PUtils || {};
    * @param {array} headers List of headers
    */
   H5PUtils.createTable = function (headers) {
-    var $table = $('<table class="h5p-admin-table"></table>');
-    
+    var $table = $('<table class="h5p-admin-table' + (H5PIntegration.extraTableClasses !== undefined ? ' ' + H5PIntegration.extraTableClasses : '') + '"></table>');
+
     if(headers) {
       var $thead = $('<thead></thead>');
       var $tr = $('<tr></tr>');
   
       $.each(headers, function (index, value) {
-        $tr.append('<th>' + value + '</th>');
+        if (!(value instanceof Object)) {
+          value = {
+            text: value
+          };
+        }
+        
+        $('<th/>', value).appendTo($tr);
       });
       
       $table.append($thead.append($tr));
@@ -85,7 +91,7 @@ var H5PUtils = H5PUtils || {};
    * @returns {$}
    */
   H5PUtils.getRebuildCache = function (notCached) {
-    var $container = $('<div class="h5p-admin-rebuild-cache"><p>' + notCached.message + '</p></div>');
+    var $container = $('<div class="h5p-admin-rebuild-cache"><p class="message">' + notCached.message + '</p><p class="progress">' + notCached.progress + '</p></div>');
     var $button = $('<button>' + notCached.button + '</button>').appendTo($container).click(function () {
       var $spinner = $('<div/>', {class: 'h5p-spinner'}).replaceAll($button);
       var parts = ['|', '/', '-', '\\'];
@@ -96,7 +102,7 @@ var H5PUtils = H5PUtils || {};
         if (current === parts.length) current = 0;
       }, 100);
       
-      var $counter = $container.find('.placeholder');
+      var $counter = $container.find('.progress');
       var build = function () {
         $.post(notCached.url, function (left) {
           if (left === '0') {
@@ -105,8 +111,9 @@ var H5PUtils = H5PUtils || {};
             location.reload();
           }
           else {
-            var counter = $counter.text().split(' ', 2);
-            $counter.text(left + ' ' + counter[1]);
+            var counter = $counter.text().split(' ');
+            counter[0] = left;
+            $counter.text(counter.join(' '));
             build();
           }
         });