Add and adapt HGBaseGuiTools and move some methods there from HGBaseAppTools.
Update layout of main view.
Code quality improvements.
Add additional weight fields to driver list and tune layout.
Add drivers to list and react on all/active switch.
Create a standard adapter that can use a simple filter implementation.
Extract importers and exporters into extra classes.
Ignore (and do not allow) files starting with '.'.
Fill track spinner with values.
Add default methods for creating a simple string adapter for a spinner.