Set Mysql to be UTF8

From http://stackoverflow.com/a/9350444

Makes everything uft8_unicode_ci

+----------------------+-----------------+
| Variable_name        | Value           |
+----------------------+-----------------+
| collation_connection | utf8_unicode_ci |
| collation_database   | utf8_unicode_ci |
| collation_server     | utf8_unicode_ci |
+----------------------+-----------------+