Fix a security issue that author_signature is not checked on the to-downstream receive of a federated relayable entity, allowing to forge relayables if you are an owner of the pod where a parent object is stored.

closes #6539

Input buffer wasn't getting updated with the user input when user did a
paste from clipboard, it caused search for the available contacts
to not trigger

closes #6510

As posts are always delivered also to reshare root, comments should also be delivered to reshare root, for concistency.

closes #6340

closes #6310

closes #6223

Adds welcome message on registration Welcome message is only send out if podmin account is defined and welcome message is enabled in the config.

This also enables the podmin account to send messages
to any local user.

closes #6128

closes #6082

refactoring:
- remove unused return-values (were used for caching, which was removed again)
- remove transaction (doesn't help here, added in 26151263)

closes #6068

closes #6069

Fixes #6067

closes #6041

closes #6022

closes #6009

closes #5991

Since the Facebook API has changed and additional permissions are required for all users on a pod to cross-post, an additional 'authorized' flag is needed to be set for the Facebook service.
This flag allows either all users, one user or no users to use the cross-posting service.

Clarifies the situation for #5923, #5260 and #5085.

closes #5985

closes #5960

closes #5962

closes #5958

closes #5938

Fix the IE version number extractor to work without space between MSIE and the version number, close #5858

This allows us to reuse any CSS we have, unify
their look and unify their look with the regular
page design.

This works by instantiating ActionView and rendering
templates in a rake task.

Inspired by the errgent gem.