Merge pull request #428 from diizy/stable-0.4

Graphics updates
Song: reset milli seconds counter when looping BB or pattern

Closes #252.
Song: do not stop playback twice

Otherwise we reset data which doesn't need to be reset when stopped
already.

Closes #255.
AutomationEditor: update pause icon manually

As we have a special semantic for automation pattern playback (i.e. we
don't playback the pattern itself but its container component like
Song Editor, Piano Roll etc.).

Closes #292.
Third release candidate for 1.0.0

Bumped version number to 0.9.92 in CMakeLists.txt, README and lmms.rc.in.
Highlight the currently selected instrument/automation patterns in the song editor