#1033378 by Berdir, te-brian: Added proper encoding (including tests) for subject to privatemsg_get_link().

#837748 by Berdir, BenK: Changed view page: cleaner HTML/CSS, display you for current user, improve overall design of displayed messages

#864554 by Berdir, shenzhuxi | BenK: Added permission/setting to control the displays of input format selection and preview button.

#850552 by Berdir | BenK: Fixed URL for non-existent users shows messages for current logged in user.

#555016 by Berdir | neriweaver, trupal218, BenK, nbz, archard, nilsja, kriskd, Liliplanet, yaz085, litwol, Feet, jaron: Added recipient types, allowing to send messages to roles and other recipient groups.

#778372 by Berdir | carlescliment: Fixed missing permission check when a user has disabled privatemsg

#660092 by Berdir | nbz: Changed inbox to use a tag instead of slow having query and fixed many broken tests.

#734900 by Berdir | robby.smith: Added permission to allow disabling privatemsg and display notice when disabled.

#404044 by rmjiv | Berdir, nbz: Added setting that allows users to disable private messages (D7 Port).