addedthe controllers and the views for the message and the conversation inbox, going to pull in some left nav styling

Added email argument to task, warn and replace if address resolves to
an invalid user@domain one.

Removing duplicated reset task (what happened?). Hate long lines.
Let user.rb handle all error checks. Clean up.

Purges database and adds a user without development dependencies.
Closes http://bugs.joindiaspora.com/issues/548. Note error handling
for User.build...

MS rake task to fix broken local people.... let me test it first on a server, but then you can run rake db:fix_diaspora_handle

with all other boxes)