Merge pull request #106 from aschnell/master

- move more code into if block
Merge pull request #107 from aschnell/master

- fixed btrfs subvolume handling for non-root devices (bnc#895075)
deprecate maintainer file
adapt Rakefile to submit to correct build service project in maintenance branch SLE-12-GA
Revert "adapt Rakefile to submit to correct build service project in maintenance branch SLE-12-GA"

This reverts commit 9867c5424e38c6dafbe696d3907d9067ddd37b6a.
Merge pull request #108 from aschnell/master

- removed some code only used by dropped yast2-repair