Get Stephen started on the preload UI stuff..

Also removed some left over database stuff that I forgot to delete out
of MainViewModel.
Revert "Attempt to get a pop window for preloaded pilot"

This reverts commit 603f88589fe14086c41020865421a8347c3dc559.
Merge remote-tracking branch 'origin/Nedlinin' into UIWorkSD
Created Preload UIs

The parts of UI's need to be rearranged, and the PreloadMainView.xaml
needs to link to the preload UI's
changed date selector to series of combo boxes
rearranged the to do list