Misc fixes
Fixed calendar bug if over 2000 events
Commited fix to issue #1644 (http://ocportal.com/tracker/view.php?id=1644). [Inserting Comcode into the WYSIWYG editor not working in IE]
Commited fix to issue #1642 (http://ocportal.com/tracker/view.php?id=1642). [Stock control can get locked up]
Addon installation tweaks