[1.7.x] Fixed indentation typo in docs/ref/contrib/sitemaps.txt.

Backport of 2003cb23d4 from master
[1.7.x] Fixed #23016 -- Updated FAQs per Aymeric's suggestions.

Backport of 549284faa4 from master
[1.7.x] Refs #23276: Removed bad examples of passing views as strings to url()

partial backport of a9fd740d22 from master
[1.7.x] Fixed #23275: Unmanaged models kept by autodetector, ignored by ops
[1.7.x] Revert "Applied unicode_literals to makemessages command"

This reverts commit cdfefbec7 as it caused a regression (#23271).
[1.7.x] Fixed #22686 -- Prevented makemessages crash with unicode filename

A more extensive fix has been reverted on the 1.7.x branch, so this
minimal fix replaces it.