small cleanup
backup modes in main activity
backup modes in batch activity
backup modes (submodes) in scheduling
add two sorting methods for the backup modes
show only the correct buttons for restore
update readme
exclude special files from compression
update changelog
fix for handling firefox-specific symlink
refine check for lib symlink
add ability to exclude system apps from scheduled backups of new and update apps
move method for logging upon completion
Merge branch 'master' of https://github.com/jensstein/oandbackup