WPF ToolKit, FreeImage, images and colors

- ADD: images can be inserted now
- ADD: started to implement font color feature
- ADD: Extended WPF Toolkit Community Edition
- ADD: FreeImage library
- UPD: AvalonDock assembly
- CHG: target system to x86
cleanings

- CHG: code cleanings
font color & cleanings

- ADD: font color support
- CHG: cleanings and improvements
picture optimizations

- CHG: inline pictures have a maximum size of 512 and saved in JPEG
format now