Fixed typo in docs/topics/conditional-view-processing.txt
Added further fixes, tests for #19949/f33db5a09a.

Thanks Susan Tan. Refs #19949.
Fixed #20972 -- Make messages cookie follow session cookie secure/httponly
Fixed #20693 -- Add timezone support to built-in time filter.

Modified django.utils.dateformat module, moving __init__() method and
timezone-related format methods from DateFormat class to TimeFormat
base class. Modified timezone-related format methods to return an
empty string when timezone is inappropriate for input value.
Merge pull request #1513 from jboecker/typo

Fixed typo in docs/topics/conditional-view-processing.txt
Fixed #20976 -- Fixed labels in migration docs.

Thanks chrismedrela for the report.
Updated instructions for running contrib tests.
Organized 1.7 minor features into subsections.
Fixed #20981 -- Noted the default value of disable_existing_loggers.
hi