Made askbot settings visible via django admin. Should make it easier to
find a setting as it gives us keyword search over setting keys, helping
us to find the value for that key, but also the group, to make it easier
to find that setting in the UI.
If a suggested question anchor element is within a widget iframe, make
it open in a new tab.
https://trello.com/c/qObNKesl/538-important-for-widgets-and-standard-web-view-suggested-question-links-to-open-in-new-tab-current-functionality-could-be-confusing