BUG 9720 Proceso de actualizacióe ProcessMaker es lento IMPROVEMENT

- ProcessMaker update process is slow for query.
- Was optimized queries and was modified the  rebuild "Table content".

workflow/engine/classes/model/Content.php

@@ -322,6 +322,7 @@ class Content extends BaseContent {
         or die ("Could not connect");
 
         mysql_select_db($workSpace->dbName, $link);
+        mysql_query("SET NAMES 'utf8';");
         mysql_query('SET OPTION SQL_BIG_SELECTS=1');
         $result = mysql_unbuffered_query($sql, $link);
         $list = array();