[HOTFIX] Fix some small UI

Hi @timlinux, this PR covers:
- Delete the 'x' button on user form popup (it breaks the state of the workflow)
![changes 1](https://cloud.githubusercontent.com/assets/992519/2692990/1f49306c-c3ac-11e3-963b-78e3dccc4d38.png)
- Delete the 'x' button on request edit link form (it breaks the state of the workflow) and move the 'Send' button to bottom right beside 'Close' button.
![changes 2](https://cloud.githubusercontent.com/assets/992519/2692999/5ebe0c68-c3ac-11e3-8424-144ba7142781.png)