cavalier/blackguard/sentinel should be able to pick powers from their parent classes

[silasary]

cavalier/blackguard/sentinel should be able to pick powers from their parent classes

[thoth-process]

Research:
Single-classed Cavalier can pick Paladin powers.
Single-classed Blackguard can pick Paladin powers.
Single-classed Sentinel can pick Druid powers.
Hybrid Sentinel can pick Druid encounter powers.
Hybrid Blackguard canNOT pick Paladin encounter powers other than those from the At-Will Blog .part (or Dread Smite)
Hybrid Cavalier canNOT pick Paladin encounter powers other than those from the At-Will Blog .part (or Holy Smite)

This should probably be renamed "Hybrid cavalier/blackguard cannot pick paladin encounter powers"