Tagging

Crazy shit happened, this broke heroku, so I'm keeping this open until we find out why.

Heroku Error:

```
-----> Preparing app for Rails asset pipeline
       Running: rake assets:precompile
       PG::UndefinedTable: ERROR:  relation "taggings" does not exist
       LINE 5:                WHERE a.attrelid = '"taggings"'::regclass
       ^
       :               SELECT a.attname, format_type(a.atttypid, a.atttypmod),
       pg_get_expr(d.adbin, d.adrelid), a.attnotnull, a.atttypid, a.atttypmod
       FROM pg_attribute a LEFT JOIN pg_attrdef d
       ON a.attrelid = d.adrelid AND a.attnum = d.adnum
       WHERE a.attrelid = '"taggings"'::regclass
       AND a.attnum > 0 AND NOT a.attisdropped
       ORDER BY a.attnum
       rake aborted!
       PG::UndefinedTable: ERROR:  relation "taggings" does not exist
       LINE 5:                WHERE a.attrelid = '"taggings"'::regclass
       ^
       :               SELECT a.attname, format_type(a.atttypid, a.atttypmod),
       pg_get_expr(d.adbin, d.adrelid), a.attnotnull, a.atttypid, a.atttypmod
       FROM pg_attribute a LEFT JOIN pg_attrdef d
       ON a.attrelid = d.adrelid AND a.attnum = d.adnum
       WHERE a.attrelid = '"taggings"'::regclass
       AND a.attnum > 0 AND NOT a.attisdropped
       ORDER BY a.attnum
```

It should be noted that `rake assets:precompile` is working on my machine.