Initial attempt at supporting membership applications.
add tests for /accounts/apply/ and related alerts.
added assertions to tests.
add test to ensure user org isn't set if multiple orgs match email.
auto-select city in app form to site city.
surround user application info in triple quotes in email.
changed 'apply for membership' to 'apply for full access'.
only show user apply alert if user is authenticated (logged in).
Merge pull request #39 from toolness/membership-applications

Allow users to "request full access" to the directory.