Show Issues tracker select only if one or more remote issue trackers available

app/views/admin/projects/_form.html.haml

@@ -31,6 +31,7 @@
       = f.label :issues_enabled, "Issues"
       .input= f.check_box :issues_enabled
 
+    - if Project.issues_tracker.values.count > 1
       .clearfix
         = f.label :issues_tracker, "Issues tracker", class: 'control-label'
         .input= f.select(:issues_tracker, Project.issues_tracker.values, {}, { disabled: !@project.issues_enabled })

app/views/projects/_form.html.haml

@@ -24,6 +24,7 @@
         = f.check_box :issues_enabled
         %span.descr Lightweight issue tracking system for this project
 
+    - if Project.issues_tracker.values.count > 1
       .control-group
         = f.label :issues_tracker, "Issues tracker", class: 'control-label'
         .input= f.select(:issues_tracker, Project.issues_tracker.values, {}, { disabled: !@project.issues_enabled })