Fix #471 Freeseer desktop launcher script does not work

- Renamed freeseer icon to put the size at the end of the name.
- Re-add main() method in __init__.py which is necessary to get
  console_script in setup.py working.

Signed-off-by: Thanh Ha <thanh.ha@alumni.carleton.ca>
Fix #475 Language file freeseer.pro entries need updating

Signed-off-by: Thanh Ha <thanh.ha@alumni.carleton.ca>
Update language files

Signed-off-by: Thanh Ha <thanh.ha@alumni.carleton.ca>
Update resources

Signed-off-by: Thanh Ha <thanh.ha@alumni.carleton.ca>