Allow # in mail_db_password

I had a # in my mail_db_password and spent the last 2 hours trying to figure out why I couldn't connect by IMAP. A # is only allowed if the connect string is wrapped in quotes.
Merge pull request #140 from jplock/jp-postgres-pid

PostgreSQL 9.1 installs its pid into a different folder than 9.2
Merge pull request #152 from ConceitedCode/patch-1

Allow # in mail_db_password
Merge branch 'master' of https://github.com/al3x/sovereign