Move Grafana to Apache's DocumentRoot

Static files are normally deployed with django's 'manage.py collectstatic'.
When run with --clear option, which seems to be default in some distributions
(e.g. RDO), all static resources are deleted first. Current Horizon integration
creates link to Grafana in static directory. Runing collectstatic --clear
leaves Grafana corrupted.

Proposed solution: Move Grafana to Apache's DocumentRoot.

also see: https://github.com/hpcloud-mon/ansible-monasca-ui/pull/6

Change-Id: Icbb2eecd45dfb1da48f63464ac83acb9e06cd71f

README.md

@@ -8,7 +8,7 @@ by monasca-vagrant.
 
 * git clone https://github.com/openstack/horizon.git  # clone horizon
 * git clone https://github.com/hpcloud-mon/grafana.git
-* ln -s grafana/src horizon/static/grafana
+* ln -r -s grafana/src *apache_document_root*/grafana
 
 * cd horizon
 * Add git+https://github.com/openstack/monasca-ui.git  to requirements.txt
@@ -55,8 +55,8 @@ ln -s ../monasca-ui/monitoring monitoring
 ##Set up Grafana
 
 ```
-cd static
-ln -s ../../grafana/src grafana
+cd ..
+ln -r -s grafana/src <apache_document_root>/grafana
 cd grafana
 cp config.monasca.js config.js
 ```

monitoring/overview/templates/overview/index.html

@@ -1,5 +1,5 @@
 {% extends 'base.html' %}
-{% load static i18n %}
+{% load i18n %}
 {% block title %}{% trans 'Monitoring' %}{% endblock %}
 
 {% block page_header %}
@@ -9,7 +9,7 @@
 {% block main %}
     <div style="padding: 3px;">
       {% for dashboard in dashboards %}
-      <a target={{ dashboard.title }} href="{% get_static_prefix %}grafana/index.html#/dashboard/file/{{ dashboard.fileName }}?api={{api}}" class="btn btn-default btn-sm">
+      <a target={{ dashboard.title }} href="/grafana/index.html#/dashboard/file/{{ dashboard.fileName }}?api={{api}}" class="btn btn-default btn-sm">
               <span class="glyphicon glyphicon-dashboard"></span>
               {% trans dashboard.title %}
           </a>