Added 'Get Help' entry

Added the 'Get Help' menu entry. (discussed this with DJ)
- Placed it before 'Report a Bug' because I think, to begin with, you are more likely to go for help than report a bug.
- Did not call it 'Discuss' because that would be too narrow. The page it is linked to will amongst others, provide a link to stackoverflow which explictly is a Q&A forum
- Added gethelp.html page