Issue #2529820 by captainack: Import code loses sending method / invite_sending_controller - using features or otherwise

Issue #2292075 by franksj, ckng: User updates own profile. user->picture removed during invite_notifications_init(), grammar

Issue #2501499 by David_Rothstein: If an existing user is invited and is not logged in when clicking the link to accept the invite, the invitation is never accepted

Issue #2223399 by steven.wichers, ckng: Allow modules to change the redirect destination and message

Issue #2501427 by David_Rothstein, ckng: "Use default settings" option doesn't work for mail body and subject; instead the global settings are inconsistently used

Issue #2041249 by gumanist. hook_invite_type_save() replaced with hook_TYPE_insert and hook_TYPE_update