Remove a call of File.dirname
Use Rails.join.root
Use Process.daemon
Make pids directory if none
Remove JSON logics for backward compatibility in IE8 or lower.
Move functions from common.js to DateTime.js
Change indentations to 4 spaces.
Merge pull request #139 from aerith/remove-deprecate-datetime-source

Remove deprecate datetime source
Merge pull request #135 from mrkn/process_daemon

Process daemon