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)
Add code to handle ownCloud servers running on IDN

ownCloud instances can run on servers having an internationalized domain
name. This commit adds a conversion function between ASCII and Unicode.
The conversion function is used in the Authenticator and Preferences
activities.

See issue #469.
update
new url
Download thumbnails from server with rest api
- removed help function
- 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
select all / deselect all file in upload menu
- removed german translation
- disabled sort by size until server supports server-side folder size
calculation
Added feature for remembering last upload location when sharing a file. Also added an option to turn it off in prefrences.
Fixed merge
Fixed imports and added comments
Merge branch 'idn_hosts' of https://github.com/ogasser/android into idn_hosts

Conflicts:
	src/com/owncloud/android/authentication/AuthenticatorActivity.java