Dragonriding Update

[wyldclaw]

Add Reverse and Reverse Challenge racing achievements. I also simplified sublabel and note getters.

• [ ] Localization
  • [ ] Localize 'Challenge' in all languages
    • [x] deDE
    • [x] enUS
    • [x] esES
    • [x] frFR
    • [ ] ruRU
    • [x] zhCN
    • [x] zhTW
  • [ ] Localize 'Reverse Challenge' in all languages
    • [x] deDE
    • [x] enUS
    • [x] esES
    • [x] frFR
    • [ ] ruRU
    • [x] zhCN
    • [x] zhTW
  • [ ] Localize most koKR entries. Sorry, I tried!
• [x] Challenge Currency / Time
  • [x] Azure Span
  • [x] Forbidden Reach
  • [x] Ohn'ahran Plains
  • [x] Thaldraszus
  • [x] Waking Shores
  • [x] Zaralek Cavern
• [x] Reverse Challenge Currency / Time
  • [x] Azure Span
  • [x] Forbidden Reach
  • [x] Ohn'ahran Plains
  • [x] Thaldraszus
  • [x] Waking Shores
  • [x] Zaralek Cavern
• [x] Add Dragonriding Cup rewards from Maztha to new Valdrakken node
• [x] Add Dragonriding Cup rewards to both Stormwind and Orgimmar vendors
• [x] Add Rostrum of Transformation locations with achievement tracking
• [x] Fix Vignette reward display. Current node tooltips shows blank line before 'Challenge:' but Vignette tooltips are removing the blank line. I'm not sure about AreaPoiID tooltips.