* Add restricted user filter to LDAP authentification

* Fix unit test cases

* Add option to prevent LDAP from deactivating everything on empty search

* Update options/locale/locale_en-US.ini

Co-Authored-By: guillep2k <18600385+guillep2k@users.noreply.github.com>

Co-authored-by: guillep2k <18600385+guillep2k@users.noreply.github.com>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>

* add CLI commands to manage LDAP authentication source

* delete Gogs copyright

* remove unused return value of func parseLoginSource

* fix comment

Co-Authored-By: ngourdon <31291059+ngourdon@users.noreply.github.com>

* remove config flag already present in global flags

* remove config flag from ldap commands in docs

* remove config flag handling