The specification is developed here:
http://www.freedesktop.org/wiki/Specifications/open-collaboration-services-1.7#CLOUD
will be moved to
http://www.freedesktop.org/wiki/Specifications/open-collaboration-services
as soon as everything is done.

This reverts commit 3937d19fa2ef3da2719d0425ce02707d0345960c.

This function is only found in newer php versions

should be more reliable for files that "look like" other types based on their magic numbers such as odf and docx files
also a lot faster then the old way

increase width of user migrates form in personal settings, so you can read the whole label in all languages