ARTEMIS-3653 broker diagram improvements

* only show the checkboxes that have any influence on the diagram
* add additional brokers that are known but are not part of the cluster (at this moment)
* made construction of master-slave pair slightly more readable
* simplified construction of dummy broker icon
* show properties of current broker with the correct node of the diagram
* use the new styling for the current broker icon
* show the broker name instead of "broker"
* replace style ThisBroker with ThisMasterBroker+ThisSlaveBroker
* do not show quotes around address- and queue-names
* show the broker name without port number when the port number is the default one
* properly document the icon choices

artemis-hawtio/activemq-branding/src/main/webapp/plugin/css/activemq.css

@@ -44,8 +44,8 @@ svg text {
    font-family: PatternFlyIcons-webfont;
 }
 
-.pf-topology-svg g.ThisBroker circle {
-   stroke: #801944;
+.pf-topology-svg g.ThisMasterBroker circle {
+   stroke: black;
    fill: #c12766;
 }
 
@@ -54,11 +54,20 @@ svg text {
    fill: #c12766;
 }
 
+.pf-topology-svg g.ThisSlaveBroker circle {
+   stroke: black;
+   fill: #cf242a;
+}
+
 .pf-topology-svg g.SlaveBroker circle {
    stroke: #82171b;
    fill: #cf242a;
 }
 
+.pf-topology-svg g.OtherBroker circle {
+   stroke: #82171b;
+}
+
 .pf-topology-svg g.Address circle {
    stroke:  #2b326e;
    fill: #3e489f;