New Cask for pgAdmin3 (PostgreSQL GUI)

Add a cask for the latest version (1.8.4) of pgAdmin3, which is a GUI
client for PostgreSQL
Merge pull request #456 from jasonkarns/pgadmin3

New Cask for pgAdmin3 (PostgreSQL GUI)
Add Espresso Cask
Adding link
Adding link
AirVideoServer 2.4.6-beta3u2
Alfred 2.0.4_199
Add link field to atMonitor Cask
Set BitTorrent Sync Cask to no_checksum, add link field
Add link field to BootXChanger Cask
Add link field to Chocolat Cask
update to latest pgAdmin3 version (1.16.1)
Adding missing link field for CandyBar
Adding Subler Cask
Link Arq
Link Caffeine
Link iChm
Link iTerm2
Link 1Password
Link Propane