Revert "Redirect all types of learners to home"
Revert "Redirect all types of learners to home"

Revert commit 7af859320dbd917488eb253f5afc9b716c7b5617
because home page is not yet functioning fully for guest users.
As soon as it can display "Explore Channels", new logic can
be used again.

learningequality/kolibri,learningequality/kolibri,learningequality/kolibri,learningequality/kolibri