runner: monitor button in menu directly open monitoring of instance

working only if the instance inside the runner has configured monitoring

slapos/runner/templates/layout.html

@@ -83,6 +83,7 @@
             <li><a href="{{ url_for('inspectInstance') }}">Services</a></li>
             <li><a href="{{ url_for('viewLog') }}">Logs</a></li>
             <li><a href="{{ url_for('shell') }}">Terminal</a></li>
+            <li><a href="{{ g.instance_monitoring_url }}" target="_blank">Monitor</a></li>
             <li><a href="{{ url_for('manageRepository')}}#tab2">Git</a></li>
             <li class='right_menu main_menu'><a href="#"></a>
               <ul>

slapos/runner/views.py

@@ -61,6 +61,7 @@ def before_request():
     if request.path != "/setAccount" and request.path != "/configAccount":
       return redirect(url_for('setAccount'))
 
+  g.instance_monitoring_url =  app.config['instance_monitoring_url']
 
 # general views
 def home():