Support for Premium Resources (#809)

* Initial premium preparation for licenses and gpm handling

* Premium styling

* Removed unused import

* Synced CSS

* Updated selectize

classes/admin.php

@@ -5,6 +5,7 @@ use DateTime;
 use Grav\Common\Data;
 use Grav\Common\File\CompiledYamlFile;
 use Grav\Common\GPM\GPM;
+use Grav\Common\GPM\Licenses;
 use Grav\Common\GPM\Response;
 use Grav\Common\Grav;
 use Grav\Common\Language\LanguageCodes;
@@ -472,7 +473,7 @@ class Admin
      *
      * @param bool $local
      *
-     * @return array
+     * @return mixed
      */
     public function plugins($local = true)
     {
@@ -500,6 +501,11 @@ class Admin
         return $package;
     }
 
+    public function license($package_slug)
+    {
+        return Licenses::get($package_slug);
+    }
+
     /**
      * Generate an array of dependencies for a package, used to generate a list of
      * packages that can be removed when removing a package.
@@ -932,6 +938,22 @@ class Admin
         }
     }
 
+    /**
+     * Determine if the plugin or theme info passed is premium
+     *
+     * @param object $info Plugin or Theme info object
+     *
+     * @return bool
+     */
+    public function isPremiumProduct($info)
+    {
+        if (isset($info['premium'])) {
+            return true;
+        } else {
+            return false;
+        }
+    }
+
     /**
      * Renders phpinfo
      *