Revert "Bug Fix: Redirect to single organization"

This reverts commit 68886b7db0dbd16d75b2c04b39f3fb31a82af2cb.

Reverting because this fix caused a bug where a single-org user can
never go to organization list and hence can never see link to create
another organization - see
https://aptivate.kanbantool.com/boards/5986-econsensus#tasks-1251439
Paul's enhancement to test_redirect_for_one_organization() now causes
test failure because his code fix has been reverted - comment out enhancement and
reference the kanban ticket specifying second attempt at fixing the
issue. Have also added note to the kanban ticket referencing the test
that can be re-enhanced when we get round to working on that.
Merge branch 'revert_buggy_redirect_fix' of https://github.com/jogwen/econsensus into jogwen-revert_buggy_redirect_fix

Conflicts:
	django/econsensus/custom_organizations/views.py