Fix bug 676379: Provide a 'quick-review' view for one-click technical/editorial approval.

As a side effect, fix a bug in reverting to a specific revision; the
review tags of the reverted-to revision weren't being set back properly.
Merge pull request #1034 from ubernostrum/mark-as-reviewed-676379

Fix bug 676379: Provide a one-click 'quick-review' view
Merge pull request #1046 from berkerpeksag/bug-831444-questions

[Bug 831444] Remove questions app.
Merge pull request #1036 from groovecoder/page-watch-email-859875

bug 859875 - watch page for email notification
bug 831444: Remove tags app
Merge pull request #1048 from lmorchard/831444-remove-tags-apps

bug 831444: Remove tags app
Merge pull request #1020 from lmorchard/kumascript-upgrade-again

bug 845918: Trying the kumascript upgrade again
bug 831444: Remove flagit app
Merge pull request #1049 from lmorchard/831444-remove-flagit-app

bug 831444: Remove flagit app
Update Jingo version to 0.6.1.

- Replace all jingo.render calls
- Convert all email templates to Jinja2
- Replace safe_django_forms with jingo.monkey.patch()
- Remove dead code from demos.urls
Fix bug 856121: Use Django's sensitive-data controls.

This basically only applies the 'sensitive_post_parameters' decorator
to a few views in the users app; we probably don't even need them
there, but since that app has some forms that can handle passwords,
better safe than sorry.
update vendor submodule with jingo upgrade
bug 866459: Tweak kumascript retries and max jobs per process
fix bug 859875 - email change notifications UI

page_watch waffle flag
Merge pull request #1051 from ubernostrum/sensitive-data-856121

Fix bug 856121: Use Django's sensitive-data controls.
Merge pull request #1053 from lmorchard/866459-tweak-retries-and-max-jobs

bug 866459: Tweak kumascript retries and max jobs per process
Merge pull request #1052 from groovecoder/jingo-upgrade-rebase

Jingo upgrade rebase
Merge pull request #1050 from groovecoder/page-watch-email-859875

fix bug 859875 - email change notifications UI
fix jingo bug in ckeditor_config view
Merge pull request #1055 from groovecoder/jingo-ckeditor-config-js

fix jingo bug in ckeditor_config view