Added the following features
1) Now bitmatp fonts in different backgorund and forgrounds can be made
2) Now bitmap fonts in different bit depths can be made
3) Now the output can either be in fnt(original format) or xml format
Merge branch 'master' of https://github.com/scriptum/UBFG

Conflicts:
	fontrender.cpp
	mainwindow.ui
Merge branch 'master' of https://github.com/scriptum/UBFG
Merge branch 'master' of https://github.com/scriptum/UBFG
Merge branch 'master' of https://github.com/scriptum/UBFG
Merge branch 'master' of https://github.com/scriptum/UBFG
Merge branch 'master' of https://github.com/scriptum/UBFG
* Removed dead code
* Fixed exporting of non-distance field font maps
* Fixed visualization of non-distance filed font maps
* Reenabled support for 8/24/32 bit png font textures
Fixed bug with exporting of font textures