updated to latest version of blockUI plugin
fixed issues with display of key icon on page elements
logging of range queries set to FINE
fixed wrong behaviour of visibility buttons
improved readability of enabled/disabled visibility buttons
fixed pager initialization for files, folders, images and pages
fixed issue where dropping a user onto a group did not append user element to group in UI
Merge branch 'develop' of github.com:structr/structr into develop
fixed bug #48
reduced logging