fixes for autocomplete and fixes some specs

app/controllers/autocomplete_controller.rb

@@ -8,7 +8,7 @@ class AutocompleteController < ApplicationController
     @users = @users.active
     @users = @users.reorder(:name)
 
-    if params[:push_code_to_protected_branches] && project
+    if params[:push_code_to_protected_branches].present? && project
       @users = @users.to_a.select { |user| user.can?(:push_code_to_protected_branches, project) }.take(PER_PAGE)
     else
       @users = @users.page(params[:page]).per(PER_PAGE)

features/steps/project/merge_requests.rb

@@ -386,7 +386,7 @@ class Spinach::Features::ProjectMergeRequests < Spinach::FeatureSteps
       expect(page).to have_content(@user.name)
     end
 
-    click_button "Submit new merge request"
+    click_button "Submit merge request"
     click_link "Edit"
 
     page.within 'ul.approver-list' do

spec/helpers/merge_request_helper_spec.rb

@@ -37,7 +37,7 @@ describe MergeRequestsHelper do
         ]
       end
 
-      it { is_expected.to eq('JIRA-123, JIRA-456, and FOOBAR-7890') }
+      it { is_expected.to eq('FOOBAR-7890, JIRA-123, and JIRA-456') }
     end
   end