Remove redundant checkmark icon in Preferences > Skin drop-down menu. Only displays warning icon, if the minimum size of the selected skin is bigger than the screen resolution.
Change wording for warning message, that is displayed below the skin drop-down-menu, if the minimum size of the selected skin is bigger than the screen resolution. Reflects that we have resizable skins now.
Update warning icon displayed in the Skin selection drop-down menu.
Add warning icon to the icon template
Merge pull request #130 from esbrandt/lp1081132

Remove redundant icon in Preferences > Interface > Skin drop-down menu
Prevent some master sync party-stoppers:
* Deck passthrough activates -> sync disables
* Track ejected -> if master, sync disables, otherwise no change.
* Beatgrid on track cleared or becomes empty (0BPM) -> if quantize enabled, disable it (that's all we can do from bpmcontrol)
Prevent another party stopper
* If track is loaded or unloaded on explicit master, hand off.