Patch Version 1.1.3: Fix problem in template management when a specific "themes folder" was specificed

When a slave sites was defined with a speciic "themes folder", the standard Joomla template management was not informed of this specific folder and continue to work on the master "template folder".

The new fix allow to manage the specific template folder when it is specified in a slave site.
It also allow to use the new specific theme folder for the installation.
Remark: The specific "themes folder" path must be terminated by "/templates" because standard joomla use this "/templates" name everywhere.