fix schema updates with oracle\n basically this took me all day to debug and hack, we need a new db layer! MDB2 is dead and pecl oci8 even more so! It has officially been deprecated in php 5.4: http://www.php.net/manual/de/function.ocifetchinto.php

Don't call clearCache() for OC_Minimizer statically, create OC_Minimizer objects for both CSS and JS to clear cache after upgrade

Treat getUsers() as case insensitive, helpful for showing proper results in the share with autocomplete

Conflicts:
	core/js/share.js
	lib/util.php

don't set values with oc_appconfig when oc is not installed yet, allows to render guest page for installation again

Change version number update occurs on to prevent problem with betas, users using the 4.5 betas will have to manually trigger the update if they want to get their old shared files back again