Cleaning up MessageView

- Removed dead code/dead comment.
- Moved static utility methods to Utility.
- Renamed some methods.
- Changed the timing to call super methods.

Also:
- Internationalized formatSize()
- Added unit tests for createUniqueFile() and formatSize()
- createUniqueFile now uses File.createNewFile() instead of exists().

Change-Id: Ibc30e15b029ed5088954bd6fc9032e25dddf176e
1 file changed