Remove duplicate code
Conditionally (correctly) set THINKUP_ROOT_PATH
[DB MIGRATION REQ'D] Add ability to establish user session via private API key (optionally set/enabled)
Install upcoming release SQL if tests are running; otherwise run build-mysql
Explicitly set tu_instances_twitter.last_reply_id to an empty string on insert to avoid 'Field 'last_reply_id' doesn't have a default value' error
Add ability to send email via Mandrill instead of PHP's mail() function
Closes #1737
Updated facebook settings view to reflect current facebook new app form.

Removed instrutions about a Web Hosting checkbox, which is gone.
Added info about the App Category dropdown, which can be left alone.
Merge pull request #1747 from cdmoyer/FB-Settings

Updated facebook settings view to reflect current facebook new app form.