Add Histogram and ColorCube plugins
Addition of the bold, italic and background option in the Text plugins.
Bold and Italic fonction are modified / Utilisation of FontConfig
Add comment for the help menu.
Adding of the list of font families.
Fundamental change of the font selection.
Text: clean some usage of fontconfig
Text: clean include fontconfig header
update sconsProject
Merge branch 'develop' into bocalDevelop

Conflicts:
	tools/sconsProject