fixed tabcontrol auto navigation style
metro tile image property
MetroFonts.cs: added MetroTileTextSize and MetroTileTextWeight + public static Font Tile(MetroTileTextSize labelSize, MetroTileTextWeight labelWeight) for getting specific font
MetroFonts.cs: public static Font Tile´was overwritten with new function

MetroTile.cs: added new properties tileTextFontSize and tileTextFontWeight and change to the MeasureText() and DrawText routines for new font routines