privatemsg 7.x-1.2

This is a maintenance release with a number of bugfixes and test and documentation improvements.

Changes since 7.x-1.1:

• #1182962 by te-brian: Fixed privatemsg_message_change_recipient() does not pass to hook_privatemsg_block_message().
• by Berdir: Fixed minor coding style issue.
• #1122188 by Berdir: Fixed uid column not found errors during 6.x-2.x to 7.x-1.x upgrade.
• by Berdir: Fixed various typos, unused variables and similar issues indicated by PHPStorm.
• #1046982 by cousin_itt: Added tests for role-based blocking.
• #1093252 by Berdir: Added better tests for message preview.
• by Berdir: Fixed various coding style issues.
• #1126158 by deviantintegral: Use the current account when checking permissions in hook_user().
• #1104234 by dragon_eater: Fixed can not sent a message consisting only of the string '0'.
• #1105520 by franz: Fixed validation errors returned by the validate hook are incorrectly merged.
• #1097286 by Berdir: Fixed outdated query builder documentation.
• #1097380 by Berdir: Fixed subject consisting of only a space can not be clicked.
• #967164 by Berdir: Fixed privatemsg_roles tries to send message to uid 0 for authenticated user role.
• #1074802 by Berdir | gc11: Fixed og.module breaks privatemsg_new() form by overriding form validate callback.
• Added docblock documentation for privatemsg_schema().
• #1034378 by Berdir: Fixed Sqlite compatibility.
• #1034378 by Berdir: Fixed PostgreSQL compatibility.
• #1034378 by Berdir, te-brian: Added Add more recipient types to 'list' sql query, refactor user_load wrapper function.
• #1033378 by Berdir, te-brian: Added proper encoding (including tests) for subject to privatemsg_get_link().
• #1054082 by te-brian: Added hook to allow modules to act when message status changes.
• #1040150 by Berdir: Fixed 'Invalid address' error when from email address is left blank.
• #1048166 by Flo.: Fixed undefined variable account_id in author pane integration.
• #1034998 by Berdir: Removed outdated, unecessary hook implementation.