Quick changes that would make new user experience a lot better

[tophee]

@chuckdries

Link to documentation/forums on the webui itself would be nice (see syncthing)
related: why do you have a link on your webui to your basically dead google group when you’ve got such a thriving forum?

This has already been addressed:

Shifting to hosted forum from Google Groups

@kenkendk, now that you’ve officialy announced you are Moving to a hosted forum don’t forget to replace the Google Groups icon & link on the web GUI footer with the new forum!