Fix #763810: Configure module weights to ensure that the core module is always called before the others

Fix #715800: type-specific settings act as default settings only, not as a type-wide configuration switch

Proper fix for #480916: only use cached node type when processing comments also for mail and pdf links

Fix #552646: don't add the page to be sent title field in the send-by-email form when the title is empty

Update changelog

add new 'access send to friend' and 'access PDF version' permissions to any role which has 'access print'