flash draft status when requirements are not met for new users

Meta: [Title length restrictions are not obvious](http://meta.discourse.org/t/title-length-restrictions-are-not-obvious/6152)

Trying the suggestion from @coding-horror to flash the draft status in red while the requirements are not met for **new** **users** ***only***.

![flash](https://f.cloud.github.com/assets/362783/435084/f1fd232c-af9b-11e2-924f-b50478940ff0.gif)

*(EDIT: I don't know why, but the .gif is 2x as fast...)*

Notes:
- This is only flashing for the title (but this behavior can *easily* be added to the reply)
- I changed the `draft-status` from a `class` to an `id` for better CSS selection performance
- I added the `trust_level` to the `CurrentUserSerializer` so that I can know if the user is new