Add services for sending and receiving messages.
Add services to Q and A service.

Allow to use same service for both help and turnover.
Revert "Initial commit of vopros service message."

This reverts commit 7f40a7d597e233e81d29dac69bb4d606ecde3c4d.
Revert "Add services for sending and receiving messages."

This reverts commit 2a4b8c7751e1ad2ca7a9fc46ffd3be83b9a3025c.
Make user_answer_preference hookable.
Whitespace fixes.
Much work on messaging.
Fixing merge issues.
Fixing refactoring errors.
Fix space.
Entity API doesn't like empty arrays.
Revamped auth a bit.
Improved service call error handling a tad.
Send message implementation.
Show messages the right place on helper.
Added documentation.
Stray space.
Another merge fumble.
Documentation.
Create object of the right kind.