Issue #309: Add fields required to remind people when they're not available
Merge pull request #358 from warmshowers/20131124_add_unavailable_wsuser_vars

Issue #309: Add fields required to remind people when they're not available
Issue #209: Reminder on login when set to not currently available
Rearrange order of wsuser_fieldlist to put becomeavailable higher (for Issue #333)
Merge pull request #359 from warmshowers/20131124_unavailable_message_on_login

Issue #209: Reminder on login when set to not currently available
Temp commit for Chris branch of progress

Overwrite me!