Improves coverage for the admin/users_controller
Imrpoves security coverage
Fixes redirect after user updates settings
Test the mark as read functionality
Remove unreachable code

Right now it says if A elseif !A else ....

The else part will never be reached!
Removes failing code (we don't do email confirmations)

also adds test for changing password!
Adds test for an invalid edit
Fixes tests
Non-functional code, devise handles this in a separate location
Obsolete code (replaced by "can_send_message_to_user")
ActionMailer has been configured not to deliver emails

Now we don't need a dirty "env = test" check!!
Merge pull request #246 from boersmamarcel/fixcoverage

Adds more coverage!!