Fix some lintian-warnings

- W: razorqt source: debhelper-but-no-misc-depends razorqt
 - W: razorqt source: debhelper-but-no-misc-depends razorqt-dev
 - W: razorqt source: debhelper-but-no-misc-depends librazorqt-dev
 - W: razorqt source: out-of-date-standards-version 3.9.1 (current is 3.9.4)