update infieldlabel script from @zawaideh to fix autofill overlap, https://github.com/zawaideh/In-Field-Labels-jQuery-Plugin

Ref of MDB2 bug is 19676

Fixes #82

Codestyle add some needed spaces.

use the share table from the db to find the item source if the public
link re-shares a already shared file.

http://owncloud.org/dev/coding-style-guide/

calling OC_Filesystem at this point will initialize file system with wrong user (for public shared links if another user is logged in). Therefore remove trailing slashes without the help of OC_Filesystem.

checkstyle: some more cleanups

More Checkstyle cleanup