Advanced options

Make some minor copyediting and bug fixing.
It actually works though; the previous line did not (at least in Firefox). Also, [line 184](https://github.com/mc10/Reddit-Enhancement-Suite/blob/advanced-options/lib/console.js#L184) and [190](https://github.com/mc10/Reddit-Enhancement-Suite/blob/advanced-options/lib/console.js#L190) use the same syntax, so looks aren't really an issue.