fix #2928

translation of string "Shared" has to be marked as located in "files" for the translation extractor

Fixes #1619

Fixes two issues if you using IE8. IE8 has problems with .bind actions and since jquery 1.7.2 using .bind is old school style for event delegation. the new and better way is using .on() function. The second is using $.each instead of for() to walkthrough an array! Now it works perfect, the events after uploads are triggered.

also fixes an issue where some fileactions always worked on the last file in the list

Support for unshare from self, with a bunch of temporary fixes to overcome configuration problems with file actions

confusion about the operation.