Convert database to UTF-8

Summary: This is the script used for conversion: P319

Test Plan:
Update diff with UTF-8 characters in description.
`sql/upgrade_schema.php`
Verify data in DB and that it looks good on web.

Reviewers: epriestley, nh

Reviewed By: epriestley

CC: aran, epriestley

Maniphest Tasks: T327

Differential Revision: https://secure.phabricator.com/D1830

src/storage/connection/mysql/AphrontMySQLDatabaseConnection.php

@@ -163,6 +163,7 @@ class AphrontMySQLDatabaseConnection extends AphrontDatabaseConnection {
           if (!$ret) {
             $this->throwQueryException($conn);
           }
+          mysql_set_charset('utf8');
         }
 
         $profiler->endServiceCall($call_id, array());