do not trigger error messaging when requesting HEAD (considering it as a "test" to check if resource exists in location)
improved fileExists validator
late fix to prevent skip via a fast click on registration screen
some issues on media size
quick fixed mediaSizer init params
upd. res man
changed prefix names to support windows fs
triggers sizeChange on mode change
changed constant prefix param name
mathJax fallback
removed registration
rebuild js
2.6.X
added warning to logger on missing file
Initial commit
Update .htaccess

removed exceptions for folders that should not be accessible
fixed deprecated constants