better alert handling
tabs to spaces
[bugfix] replace '/' in the seo url
Merge pull request #25 from cnlpete/release/3.0

bugfix
pre-merge
Merge branch 'master' of github.com:marcoraddatz/candyCMS-Core
fixed bug that always displayed json error messages
quickfix for wrong json information - this has to be improved
fixed media upload - profile image etc. missing
fixed profile images and download uploads
fixed smaller bugs
small caching updates (compiling might be broken)
fixed redirect
fixed caching
Merge branch 'release/3.0' into development

Conflicts:
	controllers/Mails.controller.php
	controllers/Main.controller.php
	controllers/Medias.controller.php
	controllers/Users.controller.php
	helpers/Helper.helper.php
	helpers/SmartySingleton.helper.php