only include mutual sharing contacts in conversations form on contacts page

fixes #7377

app/assets/javascripts/app/pages/contacts.js

@@ -81,7 +81,7 @@ app.pages.Contacts = Backbone.View.extend({
   showMessageModal: function(){
     $("#conversationModal").on("modal:loaded", function() {
       var people = _.pluck(app.contacts.filter(function(contact) {
-        return contact.inAspect(app.aspect.get("id"));
+        return contact.person.get("relationship") === "mutual" && contact.inAspect(app.aspect.get("id"));
       }), "person");
       new app.views.ConversationsForm({prefill: people});
     });

spec/controllers/jasmine_fixtures/contacts_spec.rb

@@ -20,6 +20,9 @@ describe ContactsController, :type => :controller do
     end
 
     it "generates the aspects_manage_contacts_json fixture", fixture: true do
+      # adds one not mutual contact
+      bob.share_with(FactoryGirl.create(:person), @aspect)
+
       get :index, params: {a_id: @aspect.id, page: "1"}, format: :json
       save_fixture(response.body, "aspects_manage_contacts_json")
     end

spec/javascripts/app/pages/contacts_spec.js

@@ -297,7 +297,9 @@ describe("app.pages.Contacts", function(){
       expect(app.views.ConversationsForm.prototype.initialize).toHaveBeenCalled();
 
       var prefill = app.views.ConversationsForm.prototype.initialize.calls.mostRecent().args[0].prefill;
-      var contacts = app.contacts.filter(function(contact) { return contact.inAspect(app.aspect.get("id")); });
+      var contacts = app.contacts.filter(function(contact) {
+        return contact.person.get("relationship") === "mutual" && contact.inAspect(app.aspect.get("id"));
+      });
       expect(_.pluck(prefill, "id")).toEqual(contacts.map(function(contact) { return contact.person.id; }));
     });
   });