Added tests and minified javascript missing in 83a3add4bed8d8d49f93b30c817c66908b0a26ba.

Refs #22038.
Added some tests for #21725.
Fixed test failures when running in a narrow Python build.
Deprecated django.utils.text.javascript_quote.

Refs #21725.
Fixed #22007 -- Fixed cbv docs - make imports consistent

Thanks to trac user kinjal.dixit for the report.
Fixed #21435 -- Improved error message when urlconf is empty.

The new error message now hints that the most likely issue
is a circular import.

Thanks to trac user elena for the report and to
bpeschier for the original patch.
Fixed #22123 -- EmailValidator now also accepts IPv6 literals in addresses
Fixed #21902 -- Documented search order for list_display.
Fixed #22120 -- Documented persistent activation of languages and cleaned up language session key use
Fixed #22092 -- Documented ResolverMatch.view_name
Extra new line to make flake8 happy
Fixed #22032 -- added documentation for settings.MIGRATION_MODULES
Fixed warnings when building the documentation.
Fixed #21741 -- Fixed render_to_string to stop pushing empty dictionaries to its Context

Thanks to kezabelle for the report and original patch
and to numerodix for his improved patch.
Fixed #22113 -- changed object_name to model_name in CBV docs.

Thanks to trac user nikunj.sg for the report.