closes #6647

Fix typos

change forbitten to forbidden

fix styling issue and copypaste

improve code style for aspec_memberships_controller.rb with rubocop

fix styling issues

aligned elements of hash literals

fix typo

fix locale name and styling of its usage

fix failing tests

closes #6554

closes #6630

* ignore bin folder (generated files)
* allow same length for modules as for classes

closes #6635

closes #6626

[ci skip]

closes #6595

* Make Retraction be allowed to be received publicly (probably just never used before anywhere)
* Since public receiver bypasses @object.receive in some cases add the author signature verification for relayables to protect from relayables forgery
* xml_author was wrong in some cases for RelayableRetraction

It doesn't look used anymore either

closes #6615