Add submit button to the top of the page

[As suggested](http://community.mybb.com/thread-145998-post-1049296.html#pid1049296) I'm adding a submit button at the top of the Goodbye Spammer page to avoid scrolling when really you just want to delete that spammer as soon as possible. It looks like this:

![goodbyespammer_actions](https://f.cloud.github.com/assets/180382/1608716/3eafa08a-5511-11e3-95b8-387c0e186986.png)

If you merge, note that I didn't update versions or tags. I wasn't sure if you wanted to go to v1.2 or v1.1.2. I also didn't update the screenshot because I don't have OSX and it wouldn't match (OCD much?). I'll let you do all that afterwards. I can do it too if you want. :P

Or don't merge at all and implement the button differently.