Marble: Implement support for text and background color in webpopup
completed by: Illya Kovalevskyy
mentors: Torsten Rahn, Dennis Nienhüser
Extend AbstractInfoDialog by two methods:
- setBackgroundColor( const QColor &color );
- setTextColor( const QColor &color );
Implement these methods in the webpopup plugin appropriately: If a color is invalid, the currently implemented behavior should apply. Otherwise the chosen color should be selected as the background or text color, respectively.