Add set-phase-on-sync-enable.  Fails because internal buffer is always marching forward
Try to sync phase when enabling sync follower
Sync phase in more situations.
Make programatically-triggered phase syncing happen inside enginebuffer to prevent off-by-one-buffer misalignment.
Add set-phase-on-sync-enable.  Fails because internal buffer is always marching forward
Try to sync phase when enabling sync follower
Sync phase in more situations.
Make programatically-triggered phase syncing happen inside enginebuffer to prevent off-by-one-buffer misalignment.
Address notes
Fix sign comparison warning.
Instead of rewriting QGroupBox to QFrame in <Style> nodes, instead re-write QGroupBox as WWidgetGroup.
Normalize potmeter widget values to [0.0, 1.0] instead of [0.0, 127.0].

This is another step towards getting rid of MIDI assumptions that are baked into
the widget system.

* Control parameter space for potmeters is now [0.0, 1.0] instead of [0.0,
  127.0].
* Non-linearity of parameter space (64 being the center value) now only applies
  to MIDI, not widgets.
* Fix all potmeter-style widgets to use [0.0, 1.0] for parameter values.
Fix seek min value check.
Add Antialiasing and SmoothPixmapTransform render hints for WKnobComposed since
it rotates raster images.
Revert "Normalize potmeter widget values to [0.0, 1.0] instead of [0.0, 127.0]."

This reverts commit 328d5958483ceb33cee74def6c947111182b5af0.
Merge branch 'master' of github.com:mixxxdj/mixxx into mastersync-sync-phase-on-enable
Don't need to fetchandstore the sync phase flag.
Merge pull request #133 from ywwg/mastersync-sync-phase-on-enable

Mastersync sync phase on enable
Merge branch 'mastersync-sync-phase-on-enable'

Conflicts:
	src/engine/enginebuffer.cpp
	src/engine/sync/syncable.h