Pulling more information from hosts (type: 4)

Monit hosts return a good amount of information.  It would be nice to have access to the protocol and be able to associate some nice icons with it in a UI.

Production XML snippet here:
```
<service type="4">
  <name>vagrant.local</name>
  <collected_sec>1412698423</collected_sec>
  <collected_usec>937202</collected_usec>
  <status>0</status>
  <status_hint>0</status_hint>
  <monitor>1</monitor>
  <monitormode>0</monitormode>
  <pendingaction>0</pendingaction>
  <port>
    <hostname>127.0.0.1</hostname>
    <portnumber>5432</portnumber>
    <request/>
    <protocol>PGSQL</protocol>
    <type>TCP</type>
    <responsetime>0.001</responsetime>
  </port>
</service>
```