Broker: Guild XP Bar

Update Version 1.3 r006:

• fixed problem with UnitGetGuildXP which now returns nil instead of 0 if not in a guild
  
• internal text coloring now supports nested colors
  
• updated libraries
  
• updated toc to 50001

Update Version 1.3 r005:

• added option to display current xp/rep progress on the respective bars
  
• added option to display text on mouse-over only
  
• added font and font size option for bar text

Update r004:

• new option to display ticks indicating progress steps on bar
  
• redesigning tooltip (information, coloring, extend/collapse history info via +/- button)
  
• fixing bug with check for guild membership sometimes causing the bar to be shown/hidden when not appropriate (cause: after relog the server provides cached guild data)

Update v1.1 r003:

• major code cleanup and refactoring
  
• new feature: set textures for bars (using LibSharedMedia and SharedMedia)
  
• bar thickness can now be up to 32px (max of 8px was a bit small to use with most textures)
  
• spark halo scales much slower with bar thickness now
  
• fixed bug with spark size in vertical layout
  
• reduced spark overlap at the end of xp and rep bar so it does show the actual progress more accurate
  
• updated LibJostle and LibCrayon to most recent version
  
• minor bugfixes