Bug1100916 answer a question helper

@Rik r?
Well so, the current reason is because for helpers we have the tabbed view but, for helpees we have the non tabbed view when they view all their questions. Thinking about that though, there is a totally valid reason to have the tabbed view for helpees as well.

The new tab could list all questions that the helpee has posted but have received no comments from helpers and, the active tab will then list all questions posted by the helpee which have received comments from a helper but, that has not been marked as solved.

If we can 'sell' that user story, then we can remove questions.html and only have questions_list.html (and then perhaps rename it to questions.html)