fixes #14338 - move session store configuration earlier

When a plugin has an initializer relying on :build_middleware_stack, the
middleware stack is constructed with the default session store (cookies)
as the store hasn't been configured by config/initializers/ yet. Moving...

Fixes #14071 - Using Sprockets directive to require host_edit_interfaces.js

(cherry picked from commit d05be6d1b8b17e679fbea54b07b06425dc2622ed)

fixes #13804 - set enforce_available_locales in app config

Rails 4.1.9 in rails/rails@4399a23 sets I18n.enforce_available_locales
to the value in the Rails app config, which now defaults to true,
overwriting the false value set in the initialiser. Set it in the app...

fixes #10662 - set default_locale to 'en'

When a default locale isn't set and FastGettext.set_locale() is called
with an unknown locale, it picks the first available. This depends on
the readdir order of locale/, which depends on filesystem behaviour.

Now when generating the default language API docs, they are always in...

fixes #12621 - adding cache for template kinds to prevent multiple queries

Revert "Fixes #13424 - Add Patternfly Donut Chart React component"

This reverts commit f4b2a11615d14ba1407aecd55523cd44d1010e14.

Fixes #13424 - Add Patternfly Donut Chart React component

Our donut charts do not look like they should in Patternfly.
https://www.patternfly.org/patterns/donut-chart/ uses c3, so we can do
that too.
Eventually I want to remove flot_pies too, but I have to yet figure out...

Fixes #13755 - allow reading of AR collections with safe mode enabled

Fixes #9553 - Remove workaround for older json version

We already use json 1.8, this workaround is no longer needed.

fixes #13409 - remove early initialisation of test DB

All models etc. referenced within the Rails environment startup,
including in initialisers should load without making any reference to
the database. This ensures when running `rake test` without a test DB...