Reworked docs for ModelForm validation.
Fixed #14007 -- Added model discovery in models module without the need to specify app_label.

Thanks mark@ and Aramgutang for work on the patch.
Fixed #20756 -- Typo in uWSGI docs.
Couple of cleanups in RelatedObjectLookups.js

Thanks George Karpenkov.
Allowed Context.push to behave as a context mananger.

Thanks Loic Bistuer for the review.