more work on module manager
cleanups to misc functions and include.php


git-svn-id: http://svn.cmsmadesimple.org/svn/cmsmadesimple@9090 3d254a34-79dc-0310-9e5f-be208747d8a0
Minor fix to form_start plugin
Fix CMSModule::Upgrade method to behave the same as Install() and Uninstall() for returning errors
Add local upgrade functionality into ModuleManager


git-svn-id: http://svn.cmsmadesimple.org/svn/cmsmadesimple@9091 3d254a34-79dc-0310-9e5f-be208747d8a0
Missing langstring

git-svn-id: http://svn.cmsmadesimple.org/svn/cmsmadesimple@9092 3d254a34-79dc-0310-9e5f-be208747d8a0