Added sorting by name, date or size ascending/descending
Added forgotten Comparator
Renamed sorting labels
Keep folders on top
- Only three orders: A-Z, Big-Small, New-Old.
- Folder size is computed locally (therefore only downloaded files are
obeyed)
- persist settings for sort order
- sort dialog shows the right selected item
Merge branch 'sortingFiles' of https://github.com/tobiasKaminsky/android into sorting_files

Conflicts:
	res/menu/main_menu.xml
	src/com/owncloud/android/ui/activity/FileDisplayActivity.java
	src/com/owncloud/android/ui/adapter/FileListListAdapter.java
- removed german translation
- disabled sort by size until server supports server-side folder size
calculation
- requested changes by review by davivel
- added lgpgl
- added requested changes
Merge branch 'develop' into sorting_files_2

Conflicts:
	src/com/owncloud/android/ui/adapter/FileListListAdapter.java
Merge branch 'sortingFiles' of https://github.com/tobiasKaminsky/android into sorting_files_2

Conflicts:
	src/com/owncloud/android/datamodel/OCFile.java
	src/com/owncloud/android/ui/adapter/FileListListAdapter.java
	src/com/owncloud/android/ui/fragment/OCFileListFragment.java
Add comment removed when fixing conflict in merge
Fixed. In devices with Android 2.x 'Sort' option in menu has not icon related
Fixed. When trying to open the app in Galaxy mini 2, a crash appears
Merge pull request #676 from owncloud/sorting_files

Added sorting by name or date