Trial->Paid conversion tracking with GTM

* Added trial to paid conversion tracking with GTM
* Removed WHMCS roundtrip from Showbuilder
* Moved all Analytics code into common/GoogleAnalytics.php
* Added a new Thank You page after plan changes to capture conversions
* Added a ConversionTracking plugin to facilitate that
* Also backported some minor staticBaseDir compatibility changes
* Fixed a logic error in creating the baseDir

airtime_mvc/application/configs/ACL.php

@@ -36,6 +36,7 @@ $ccAcl->add(new Zend_Acl_Resource('library'))
       ->add(new Zend_Acl_Resource('rest:media'))
       ->add(new Zend_Acl_Resource('rest:show-image'))
       ->add(new Zend_Acl_Resource('billing'))
+      ->add(new Zend_Acl_Resource('thank-you'))
       ->add(new Zend_Acl_Resource('provisioning'));
 
 /** Creating permissions */
@@ -69,6 +70,7 @@ $ccAcl->allow('G', 'index')
       ->allow('A', 'user')
       ->allow('A', 'systemstatus')
       ->allow('A', 'preference')
+      ->allow('S', 'thank-you')
       ->allow('S', 'billing');
       
 

airtime_mvc/application/configs/conf.php

@@ -44,6 +44,13 @@ class Config {
             $CC_CONFIG['dev_env'] = 'production';
         }
 
+        //Backported static_base_dir default value into saas for now.
+        if (array_key_exists('static_base_dir', $values['general'])) {
+            $CC_CONFIG['staticBaseDir'] = $values['general']['static_base_dir'];
+        } else {
+            $CC_CONFIG['staticBaseDir'] = '/';
+        }
+
         // Parse separate conf file for cloud storage values
         $cloudStorageConfig = "/etc/airtime-saas/".$CC_CONFIG['dev_env']."/cloud_storage.conf";
         if (!file_exists($cloudStorageConfig)) {