CLC-3660: CFV Landing Page Billing Summary card: header needs different shading from DPP section
https://jira.ets.berkeley.edu/jira/browse/CLC-3660
Merge pull request #2414 from christianv/CLC-3660

CLC-3660: CFV Landing Page Billing Summary subheader shading
CLC-3414 "Implement: Re-authenticate when accessing View As"

https://jira.ets.berkeley.edu/jira/browse/CLC-3414

created a before filter in the application controller (:check_reauthentication)

that checks that the authenticated user is an admin and in the case
that they haven't reautenticated yet, and the renew=true param is present,
reauthentication is performed by calling /auth/cas?renew=true

Had to do a monkey patch on the omniauth-cas gem for the login_url method:
It checks that if the renew=ture parameter exists, and if not, it merges the
renew=true parameter into it's login_options that end up building the CAS url.

Upon callback from CAS, the SessionController#lookup method sets the :reauthenticated
cookie if the user is acting_as and the renew parameter is present.

This functionality has been implemented with the Settings.features.reauthentication flag

Fixes made to this PR
- Removed any special redirects from the UI. The check_reauthentication skip_before_filter
- skip :check_authentication filter in :lookup, :stop_act_as, and :destroy actions of the SessionsController
- feature flag was wrongly named: reauthorization instead of reauthentication
- Made previously passing tests pass again by sticking
  Settings.features.reauthentication = false
  in the before block.
- added bootstrap controller test that proves that admin users who are acting-as and have no reauthenticated cookie get redirected to /auth/cas?renew=true
- Stub out Settings.features.reauthentication = true, so that the existing act_as_user_spec tests pass
Merge pull request #2400 from chikoon/CLC-3414-reauth-on-view-as

CLC-3414 Re-authenticate when accessing View As
CLC-3538 - Error from ETSBlog

https://jira.ets.berkeley.edu/jira/browse/CLC-3538

Made the alert teaser field optional.
Only include :teaser in the result hash if it is present in the xml document.
Added dummy json file for it so Christian can test it on the splash page.
If it turns out it's necessary for the splash page, we can open another
jira and I'll make that check
Merge pull request #2413 from chikoon/CLC-3538-Error-from-ETSBlog

CLC-3538 - Error from ETSBlog