MainWindow  / LayerSettings - Wiring up things
Layer parsing - Adding parser/layer.{cpp,h}
mainwindow / layersettings - Nest the widget into a QDialog
layers - begin to implement layer mgmt
mapsettings - begin to introduce QUndo framework

- Adding a new command to set the map projection
- Fixing map projection getter
mapsettings - QUndo onto the debug value

- Introducing a new command for the debug value
- modifying setMapSettings() accordingly
mapsettings - adding a command to change md
mapfileparser - Adding a getter for MD
mapsettings - setting specific metadata
mapsettings - QUndo for path tab
Mapsettings - QUndo framework

- Adding a class for setdefresolution
- continuing on the framework integration