rename 'uri' (and parent_uri) to 'mid' (and parent_mid) since these no longer remotely resemble uri's and are actually message_id's. This change is potentially destabilising because it touches a lot of code and structure. But it has to get done and there's no better time than the present.

boot.php

@@ -17,7 +17,7 @@ require_once('include/features.php');
 define ( 'FRIENDICA_PLATFORM',     'Friendica Red');
 define ( 'FRIENDICA_VERSION',      trim(file_get_contents('version.inc')) . 'R');
 define ( 'ZOT_REVISION',               1     ); 
-define ( 'DB_UPDATE_VERSION',       1037     );
+define ( 'DB_UPDATE_VERSION',       1038     );
 
 define ( 'EOL',                    '<br />' . "\r\n"     );
 define ( 'ATOM_TIME',              'Y-m-d\TH:i:s\Z' );