changed render picture to use an explicit frame number rather than
selecting frame via the state variable.
Initial implementation of audio scrubbing in preview tab.
switched audio scrub to disable xlights timer and update preview.
Switching to bitmap buttons for play pause stop on preview.
adding image files.
TEMP commit to revert and test stat prior to these changes.
Revert "TEMP commit to revert and test stat prior to these changes."

This reverts commit 6a81cb24ec1a7a9dc4286aefa38a23d2a3eb2de3.
adding wxs file chagnes that I missed in earlier commit
Merge branch 'AudioScrub' into OpenGL

Conflicts:
	xLights/wxsmith/xLightsframe.wxs
	xLights/xLightsMain.cpp
	xLights/xLightsMain.h