Changes:
Bug #141:
Fix: Raster map search does not work with map files containing multiple '.'
Bug #142:
Fix: Raster map search does not work with lon/lat WGS84 projection
Request #143:
Delete map while active/shown
Request #144:
Make scalebar work for maps with lat/lon projection
Bug #145:
Fix: Zoom to area does not work when using lon/lat DEM and Garmin maps
Bug #146:
Fix: qlb and sticky waypoint handling for qt4.6
Request #147:
Hide / show tracks
Request #148:
Add zoom to fit for multiple selected tracks
Request #149:
Add zoom to fit for multiple selected waypoints
Request #150:
Rewrite 3D view
Request #151:
Add first person view to 3D view
Request #152:
Add point of view on track to 3D view
Request #153:
Add compass to 3D view
Request #154:
Add elevation meter to 3D view
Request #155:
Add artificial horizont to 3D view
Request #156:
Add zoom to fit for multiple selected overlays
