BUG 8529 Change "exists" to "exist" in many phrases SOLVED

- Remember these grammar rules
- Changed grammar rules as suggested.

workflow/engine/methods/setup/upgrade_SystemAjax.php

@@ -172,7 +172,7 @@ function processSchemaFile( ) {
     $oDataBase = new database($DB_ADAPTER, $DB_HOST, $DB_USER, $DB_PASS, $DB_NAME);
 
     if ( !$oDataBase->isConnected() ) {
-      $oDataBase->logQuery ('Not exists an available connection!');
+      $oDataBase->logQuery ('Does not exist an available connection!');
       return NULL;
     }