Revert "Fixes 404 Error on conference index url (#563)"

This reverts commit 287bb9c.

Author: ananyo2012

junction/urls.py

@@ -54,9 +54,6 @@
     url(r'^tickets/', include('junction.tickets.urls')),
 
     # Proposals related
-    url(r'^(?P<conference_slug>[\w-]+)/$',
-        RedirectView.as_view(pattern_name="proposals-list"),
-        name='conference-index'),
     url(r'^(?P<conference_slug>[\w-]+)/proposals/', include('junction.proposals.urls')),
     url(r'^(?P<conference_slug>[\w-]+)/dashboard/reviewers/',
         junction.proposals.dashboard.reviewer_comments_dashboard,