Adjusting healthbar related things
*unit height=healthbar height per default
*no hpbars in photomode
*renamed function
*Adjusted Healthbar color
*Hotkey for Healthbars (ToggleHealthbars)
*Background and Border Texture in core data
Healthbars

Textures (border and background)
Faction.xml can specify more healthbars details
Healthbars

* Hotkey now toggles between Default/Off/Always/Damaged/Selected
* Code clean up
Merge pull request #27 from titison/feature/hp-bars

Feature/hp bars