Nov sprint aggr - Fixes and implementation of Raw Metric Messages (from Dec.)

Implementation of Raw metric results (messages)
See Issue:
https://github.com/ARGOeu/ARGO/issues/74

More Detailed Description provided in ar-web-api doc

**api call path**
`/api/v1/status/metrics/msg/<hostname>/<service>/<metric>`

| Name      | Type   | Mandatory | Description             |
|-----------|--------|-----------|-------------------------|
| hostname  | string | yes       | hostname                |
| service   | string | yes       | name of the service     |
| metric    | string | yes       | name of the metric      |
| exec_time | string | yes       | exact time of the event |
| vo        | string | yes       | vo (default=ops)        |
| profile   | string | yes       |                         |

**xml response template**
```xml
<root>
<profile name="profile_used">
<group name="ops" type="vo">
<group name="ngi_foo" type="ngi">
<group name="site_foo" type="site">
<group name="SERVICE_foo" type="service_type">
<host name="host.foo.bar">
<metric name="metric_foo">
<status timestamp="2014-12-09T01:08:17Z" status="OK">
<summary>OK: This is a template message summary</summary>
<message>
This is a template full raw message result \n
This is a template full raw message result \n
This is a template full raw message result \n
This is a template full raw message result \n
This is a template full raw message result \n
</message>
</status>
</metric>
</host>
</group>
</group>
</group>
</group>
</profile>
</root>
```