VRFS-1972 show correct information under Still Needed section for sessions with unstructured RSVPs

web/app/views/music_sessions/session_info.html.haml

@@ -96,7 +96,10 @@
         %br/
         .left.w65.ib.still-needed
           %strong Still Needed
-          - if @open_slots.blank?
+          - if @music_session.is_unstructured_rsvp
+            .clearall.left.w100.h20.ib.mb10
+              Open to any instrument
+          - elsif @open_slots.blank?
             .clearall.left.w100.h20.ib.mb10
               All slots are taken
           - else

web/spec/features/session_info_spec.rb

@@ -207,6 +207,10 @@ describe "Session Info", :js => true, :type => :feature, :capybara_feature => tr
 
     # musician_access = true, approval_required = false
     it "should allow anyone to view for 'at will' option after session starts" do
+      @music_session.musician_access = true
+      @music_session.approval_required = false
+      @music_session.save!
+
       # attempt to access with musician who was invited but didn't RSVP
       fast_signin(@session_invitee, @url)
       ensure_success({:show_cta => true, :button_text => 'RSVP NOW!'})
@@ -235,6 +239,10 @@ describe "Session Info", :js => true, :type => :feature, :capybara_feature => tr
 
     # musician_access = true, approval_required = true
     it "should allow anyone to view for 'join by approval' option after session starts" do
+      @music_session.musician_access = true
+      @music_session.approval_required = true
+      @music_session.save!
+
       # attempt to access with musician who was invited but didn't RSVP
       fast_signin(@session_invitee, @url)
       ensure_success({:show_cta => true, :button_text => 'RSVP NOW!'})