DocumentsUI: fix recursive delete

Create one DirectoryLoader in UI thread to use for delete

Change-Id: I83a5811f152090f7812ad58ff4ee3bc13748d158
Base: CA translations

Change-Id: I6266d22931541069019f99383eb8f1abfb236f3c
Revert "Fix DocumentsUI FC"

This reverts commit 639f751240546007e916bc0903df7f3aea2c4072.
Revert "Fix crash when clicking a file from recents or downloads"

This reverts commit 4f8e125863b73f8797480e586da96f6c22481c25.
base: DocumentUI: fix a few issues handling remote content

http://jira.omnirom.org/browse/OMNI-956
http://jira.omnirom.org/browse/OMNI-950

Change-Id: I8d50d71a9c91486dfc9e5da01538c6b5a626f054
DocumentsUI: catch berserk apps on building recents

We should not crash Documents app because of that

Change-Id: Ie89a10c5005aef7f3e75a4f5a17f018e0fbc0814