Add new toolbutton, whatsthis, to MainWindow
Merge pull request #677 from zonkmachine/whatsthis2

Whatsthis2
PianoRoll: allow shift-right-click in addition to middle-click in vol/pan bars
Merge pull request #679 from diizy/master

PianoRoll: allow shift-right-click in addition to middle-click in vol/pa...
Automation Recording
Fix to previous - use value<float>() instead of making an unnecessary new function... also accidentally didn't upload the new image last time
Merge pull request #682 from diizy/autorec

Automation Recording
Automation recording: add option to trackops to switch on/off recording in all TCOs on the track
I still had time to implement this convenient little thing, so here you go...
The same code can be reused in the future for sampletracks as well.
Merge pull request #683 from diizy/autorec

Automation recording: add option to trackops to switch on/off recording ...
Automation recording: remove unnecessary hasAutomation() - the pattern doesn't need to already have automation in
order to record more...
Merge pull request #684 from diizy/autorec

Automation recording: remove unnecessary hasAutomation() - the pattern d...