Fixed some string format specifiers (long int vs int)
Only draw polygons with more than 1 point. wxWidgets 2.9.4 doesn't seem to like it if there's only 1 or less points (assertion error).
Fixes compile errors
Fixes toolbar "grabber" not showing
Fix null pointer exception on double clicking waypoint (wxWidgets 2.9.4, Mac OS X 10.8.3)
Merge pull request #47 from kheyse/miscelaneous_improvements

Miscelaneous, mainly wx2.9 and Mac build related, improvements