Update preferences.xml
Update FileStorageUtils.java
Update FileStorageUtils.java

Forget import.
Update FileStorageUtils.java
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
Update strings.xml
Update preferences.xml
Update strings.xml
Update preferences.xml
[tx-robot] updated from transifex
[tx-robot] updated from transifex