Change language

A few things:
* Adds in disclaimer on display_permits page. When user doesn't need a permit for a project, we tell them other parts of the project might require a permit and encourage them to call DSD with question. This covers DSD if they want to do other projects.
* Rewrites submit_application page, last page, to tell user to come into DSD and tell them what to bring/what to expect
* Rewrites permit_mailer to tell user to come into DSD, what to bring

@amymok ready to merge. @maya will require more spanish testing tomorrow.