Merge branch 'release/4.0.5' into develop
fixes dummy_data shell
code formatting
refactors contact
closes Mark As Read for anonymous users #274
ContactsController doesn't use own model
fixes ReadPostings::isRead for uninitialized LastRefresh
fixes caching and read entries
bumps version string
checks for equal existing user-names on new user registration
link to help page source
requests (view, mix) of non-public postings asks for login
updates documentation
improved search docs
bumps version string
Merge branch 'release/4.1.0'