Dungeondrop mount and pet tracker

Update version 2.9.0

• Added proper versioning
• The instance names of fully completed dungeons shows now in green
• Raid diffculties which share the lockout are now recognized for older raids and flags all shared difficulties as done then

Update version 2.8.0

• Removed the LFR category tracking for dungeons which are not the current expansion
• Added raid and dungeon counter to header (locked/partially locked/total) 
  • Raids and dungeons are counted separately
  • For dungeons, only mythics raise the counter up
• The difficulty label of fully locked instances are greyed out now
• The instance name of fully locked instances is red now