Fixed #22368 -- clarified connecting to Oracle DB using service name

Used the official terminology listed in
http://docs.oracle.com/cd/B19306_01/network.102/b14212/glossary.htm#i997309

Thanks michael.cherkasov for the report.
Fixed #20477: Allowed settings.FORMAT_MODULE_PATH to be a list of modules.

Previously the FORMAT_MODULE_PATH setting only accepted one string (dotted
module path).

This is useful when using several reusable third party apps that define new
formats. We can now use them all and we can even override some of the formats
by providing a project-wide format module.
Removed locale dirs for single-message apps

Considering that these apps only translate their app name, it's not
worth having a whole bunch of po files just for that. The translatable
app name for those apps will be integrated in Django core catalog.
Revert "Fixed #20477: Allowed settings.FORMAT_MODULE_PATH to be a list of modules."

This reverts commit 950b6de16ac2f8135612f2ed5984c090dd8e4dcf.
Fixed #22652 -- Replaced UserModel.objects with UserModel._default_manager.

Thanks alexdlaird for the report.
Re-added JS catalog in manage_translations script
Updated translation catalogs
Fixed #22655 -- Fixed GeoQuerySet doc about strictly_below

The paragraph was a copy of strictly_above.
Revert "Fixed regression from a2dd618e3b4a7472fab852da450ca5eef92a922f."

This reverts commit 5a2556afb9b1b3ef6e0622552970c67ac84ecd28.
Fix a2dd618 for mysql.
Fixed #22638 -- Changed CookieWizardView to ignore invalid cookies
Fixed #22661 -- Move makemigrations tests to the proper class
Merge pull request #2688 from whoshuu/22661

Fixed #22661 -- Move makemigrations tests to the proper class
Removed unused translations in auth tests
Fixed #22645: Allow apps with no models module to still have migrations
Add feature for implied null (needed for Firebird backend)