xx 2016.33 Adds new Mapping screen

[sean]

Release 2016.33
Keith has created a whole new mapping screen to help during "Import, Import Effects". Before it showed thousands of rows, now it shows hundreds. Bug fixes by Gil and Dan.

Latest releases are found at http://nutcracker123.com/nutcracker/releases/
Issue Tracker is found here: https://github.com/smeighan/xLights/issues

XLIGHTS/NUTCRACKER RELEASE NOTES:
---------------------------------
2016.33  May 25, 2016
   -- bug (dkulp) Maybe fix #571?   Don't post the event, call directly. 
   -- bug (dkulp) don't draw the grid and then immediately refresh anyway.
   -- bug (dkulp) Log a few more opengl things, Force GDI driver down to 1.x
   -- enh (keithsw) General import improvements: filename in title bar, warnings
             if you have not saved mapping and the ability to suppress excessive error messages.
   -- enh (keithsw) Improved xLights sequence import.
   -- enh (gil)   Add right-click delete model option in layout list.
   -- bug (gil)   Fix node layout for custom models. Fixes #574.

[jnealand]

The new mapping screen looks really nice.  Last night I imported a shared xml that I had never done before and everything worked great.  Will try some more this weekend.