Removed dashboard rudiments from plugin. Fixed gulp build js warnings.

.jshintrc

@@ -80,7 +80,7 @@
     "shelljs"       : false,    // ShellJS
     "worker"        : false,    // Web Workers
     "wsh"           : false,    // Windows Scripting Host
-    "yui"           : false,    // Yahoo User Interface
+    "yui"           : true,    // Yahoo User Interface
 
     // Custom Globals
     "globals"       : {

laterpay/application/Controller/Admin.php

@@ -310,57 +310,6 @@ protected function render_add_edit_post_page_help() {
         ) );
     }
 
-    /**
-     * Add contextual help for dashboard tab.
-     *
-     * @return  void
-     */
-    protected function render_dashboard_tab_help() {
-        $screen = get_current_screen();
-        $screen->add_help_tab( array(
-            'id'      => 'laterpay_dashboard_tab_help_conversion',
-            'title'   => __( 'Conversion', 'laterpay' ),
-            'content' => __( '
-            <p>
-                The <strong>Conversion</strong> (short for Conversion Rate) is the share of visitors of a specific post, who actually <strong>bought</strong> the post.<br>
-                A conversion of 100% would mean that every user who has visited a post page and has read the teaser content had bought the post with LaterPay.<br>
-                The conversion rate is one of the most important metrics for selling your content successfully: It indicates, if the price is perceived as adequate and if your content fits your audience\'s interests.
-            </p>
-            <p>
-                The metric <strong>New Customers</strong> indicates the share of your customers who bought with LaterPay for the first time in the reporting period.<br>
-                Please note that this is only an approximate value.
-            </p>', 'laterpay'
-            ),
-        ) );
-        $screen->add_help_tab( array(
-            'id'      => 'laterpay_dashboard_tab_help_items_sold',
-            'title'   => __( 'Items Sold', 'laterpay' ),
-            'content' => __( '
-            <p>
-                The column <strong>Items Sold</strong> provides an overview of all your sales in the reporting period.
-            </p>
-            <p>
-                <strong>AVG Items Sold</strong> (short for Average Items Sold) indicates how many posts you sold on average per day in the reporting period.
-            </p>', 'laterpay'
-            ),
-        ) );
-        $screen->add_help_tab( array(
-            'id'      => 'laterpay_dashboard_tab_help_gross_revenue',
-            'title'   => __( 'Committed Revenue', 'laterpay' ),
-            'content' => __( '
-            <p>
-                <strong>Committed Revenue</strong> is the value of all purchases, for which your users have committed themselves to pay later (or paid immediately in case of a Single Sale purchase).
-            </p>
-            <p>
-                <strong>AVG Revenue</strong> (short for Average Revenue) indicates the average revenue per day in the reporting period.
-            </p>
-            <p>
-                Please note that this <strong>is not the amount of money you will receive with your next LaterPay payout</strong>, as a user will have to pay his invoice only once it reaches 5.00 Euro and LaterPay will deduct a fee of 15% for each purchase that was actually paid.
-            </p>', 'laterpay'
-            ),
-        ) );
-    }
-
     /**
      * Add contextual help for pricing tab.
      *

laterpay/application/Controller/Admin/Account.php

@@ -268,9 +268,6 @@ protected static function update_plugin_mode( LaterPay_Core_Event $event ) {
         $result      = update_option( 'laterpay_plugin_is_in_live_mode', $plugin_mode );
 
         if ( $result ) {
-            // delete dashboard cache directory after mode was changed
-            LaterPay_Helper_File::delete_directory( laterpay_get_plugin_config()->get( 'cache_dir' ) . 'cron/' );
-
             if ( get_option( 'laterpay_plugin_is_in_live_mode' ) ) {
                 $event->set_result(
                     array(

laterpay/application/Controller/Install.php

@@ -45,7 +45,6 @@ public static function get_subscribed_events() {
                 array( 'maybe_add_is_in_visible_test_mode_option' ),
                 array( 'maybe_clean_api_key_options' ),
                 array( 'maybe_update_unlimited_access' ),
-                array( 'maybe_clear_dashboard_cache' ),
             ),
         );
     }
@@ -467,24 +466,6 @@ public function maybe_update_unlimited_access() {
         }
     }
 
-    /**
-     * Clear dashboard cache.
-     *
-     * @since 0.9.11
-     * @wp-hook admin_notices
-     *
-     * @return void
-     */
-    public function maybe_clear_dashboard_cache() {
-        $current_version = get_option( 'laterpay_version' );
-        if ( version_compare( $current_version, '0.9.11', '<' ) ) {
-            return;
-        }
-
-        // remove cache directory
-        LaterPay_Helper_File::delete_directory( laterpay_get_plugin_config()->get( 'cache_dir' ) . 'cron/' );
-    }
-
     /**
      * Update vouchers structure.
      *