Fix hashcat cask

  * Add missing depends_on_formula 'unar'
  * Discussion: https://github.com/phinze/homebrew-cask/pull/4010
Merge pull request #4135 from craSH/hashcat

Fix hashcat cask
Add Noisy.app v1.5

Noisy is a white/pink/brown noise generator, helpful for concentration.

Changing Noisy.app to use version latest scheme
Merge pull request #4137 from zacs/noisy

Add Noisy.app v1.5
add iStat Server.app cask