Add libtidy to the requirements section in the installation document.

See also bug 772122.
Add a note to the installation documentation about the
CSRF_COOKIE_SECURE setting.

See for more information:

https://docs.djangoproject.com/en/dev/ref/settings/#std:setting-CSRF_COOKIE_SECURE
Merge pull request #1033 from berkerpeksag/csrf-doc

Add a note to the installation documentation about the CSRF_COOKIE_SECURE setting.
Merge pull request #1031 from berkerpeksag/req-update

Add libtidy to the requirements section in the installation document.
bug 863692: Waffle switch "wiki_error_on_delete" to enable error-on-delete in wiki
Merge pull request #1035 from lmorchard/863692-delete-exception-waffle

bug 863692: Waffle switch "wiki_error_on_delete"
bug 831444: remove unused gallery app
Merge pull request #1037 from lmorchard/831444-remove-gallery

bug 831444: remove unused gallery app
bug 845923: Set up statsd and graphite under vagrant
bug 831444: Remove chat app
Merge pull request #1039 from lmorchard/831444-remove-chat

bug 831444: Remove chat app
bug 831444: Remove customercare app
Merge pull request #1011 from lmorchard/more-statsd-in-vagrant

bug 845923: Set up statsd and graphite under vagrant
Bug 831444: Remove improduct app; clean up urls.py
Merge pull request #1040 from lmorchard/831444-remove-customcare-app

bug 831444: Remove customercare app
Merge pull request #1041 from lmorchard/831444-remove-inproduct

Bug 831444: Remove improduct app; clean up urls.py
bug 831444: Remove forums and kbforums apps
Merge pull request #1042 from lmorchard/831444-remove-forums

bug 831444: Remove forums and kbforums apps