[#1090] Step 1 "create account"
[#1090] Add explanatory strings
[#1090] Step 2: account setup (filling in profile)
[#1090] Add inviter/communities to setup step
[#1090] Step 4: "next steps"
[#1090] Step 3: upgrade prompt

Fixes #1090.
[#1090] Remove obsolete css file
[#1090] Use userhead-like image for profile, not home
Merge pull request #1091 from afuna/convert-create-page-bug-1090

[#1090] Minor redesign of /create pages; convert BML => TT/Foundation