[0106] Updated paladin quest chain and dwarf priest racial quest

* Updated level for quests in paladin quests chain The Tome of Valor
  Min level should be 20 and quest level should be 25
  source: http://www.wowwiki.com/Quest:The_Tome_of_Valor
* Updated level for quests in paladin quests chain The Test of
Righteousness
  Min level should be 20 and quest level should be 21
  source: http://www.wowwiki.com/Quest:The_Test_of_Righteousness_(1)
* Adds dwarf priest quest 5647 (A Lack of Fear) from Night Elf priest
trainers
  It is currently only existing in DB for Human and Dwarf priest
trainers
  source: http://www.wowhead.com/quest=5647
  Linked quest to creature 4092 (Lariia <Priest Trainer>) as she is the
Night Elf priest trainer
  redirecting other races to their respective trainers for racial
quests (like Desperate Prayer)
  Updated target creature 11406 (High Priest Rohan) to complete the
quest