Small changes to VanillaInputExecuter
- Switch ts.getRotation().getPitch() to inputState.pitch() so the client
  recognizes up and down movement.
- Switch .multiply(speed).multiply(dt) to .multiply(speed * dt) as per
  thehutcher's suggestion.
Signed-off-by: Steven Downer <grinch@outlook.com>
Merge pull request #625 from Grinch/master

Small changes to VanillaInputExecuter