Fixed RC calibration trim problem.  Trim was not being set because setTrimPositions() was never being called.

This reverts commit e003dd7a.

Anton and I noticed that the message view stops autoscrolling properly
sometimes when there's a high frequency of arriving messages. This
should fix that problem.

Also fix a few compiler switch warnings

Fixed Compiler Error C2864 - only static const integral data members can be initialized within a class

Add map type selector menu; use Bing maps by default; zoom to a more
human scale on Go Home