Mark messages as read on show action
Add messages helper to set the display text for messages on messages#index
Change inbox, sent, and trash to not use ajax
Change path for messages
Swap position of date and message preview text
Use variable to message box title, and standardize with other actions using @messages
Standardize with other actions, using @message
Remove remote true off of mailbox links
Use messages/inbox for messages#index route
Remove files for ajax implementation of mailbox