[1.7.x] Fixed typo in parameter name doc for BaseCommand.check().

Backport of a8c5630c98 from master
[1.7.x] Fixed copy/paste typos in StreamingHttpResponse doc.

Backport of e9c730f6be from master
[1.7.x] Fixed and enhanced new HTML form docs.

Backport of ec85df2fa5 from master
[1.7.x] Fixed #22857 -- Reset translations when only .mo file changed

No need to restart the server when a translation file changes.
Refs #9523. Thanks artscoop for the report and Tim Graham for
the review.

Backport of 0d363b25b8 from master
[1.7.x] Bump version number for 1.7 RC 1.
[1.7.x] Fixed #22912 -- Warned about a common mistake in tutorial 5.

Backport of 1e8411259f from master
[1.7.x] Fixed #22917 -- Fixed typo in AlterIndexTogether.describe().

Backport of 70576740b0 from master