Introduced support for external services registration in the ServiceProtocol

runtime/observatory/lib/src/elements/css/shared.css

 /* Global styles */
 * {
   margin: 0;
   padding: 0;
   box-sizing: border-box;
 }
 
 body {
   padding-top: 56px;
   color: #333;
@@ skipping 1784 matching lines @@
   background-color: #0489c3;
 }
 
 /* nav-menu */
 li.nav-menu:before {
   display: inline-block;
   content: '>';
   margin-left: 0.5em;
   margin-right: 0.5em;
 }
-nav.nav-bar > ul *:first-child li.nav-menu:before {
+nav.nav-bar > ul *:first-child li.nav-menu:before,
+nav.nav-bar > ul nav-reload > li:before {
   content: '';
   margin-left: 0;
   margin-right: 0;
 }
 li.nav-menu, .nav-menu_label {
   display: inline-block;
 }
 .nav-menu_label > a {
   display: inline-block;
   padding: 12px 8px;
@@ skipping 149 matching lines @@
 }
 nav-refresh > li > button[disabled] {
   color: #aaa;
   cursor: wait;
 }
 nav-refresh > li {
   float: right;
   margin: 0;
 }
 
+/* nav-refresh */
+
+nav-reload > li > button {
+  color: #000;
+  margin: 3px;
+  padding: 8px;
+  border-width: 2px;
+  line-height: 13px;
+  font-size: 13px;
+  font: 400 'Montserrat', sans-serif;
+}
+nav-reload ul > li {
+  display: block;
+  width: 100%;
+  padding: 2px;
+}
+nav-reload ul > li > button {
+  display: inline-block;
+  padding: 8px;
+  width: 100%;
+}
+nav-reload > li > button[disabled],
+nav-reload ul > li > button[disabled] {
+  color: #aaa;
+  cursor: wait;
+}
+nav-reload > li {
+  float: right;
+  margin: 0;
+}
+
 /* object-common && class-instances */
 
 class-instances button:hover,
 object-common button:hover {
   background-color: transparent;
   border: none;
   text-decoration: underline;
 }
 class-instances button,
 object-common button {
@@ skipping 544 matching lines @@
 
 vm-connect-target > button.delete-button:hover {
   background: #ff0000;
 }
 
 /* vm-connect */
 
 vm-connect ul {
   list-style-type: none;
 }