COMPASS-834: Don't focus on instance when clicking refresh (#815)

Author: durran

src/internal-packages/instance-header/lib/stores/index.js

@@ -44,14 +44,19 @@ const InstanceHeaderStore = Reflux.createStore({
     };
   },
 
+  /**
+   * @note: Durran: COMPASS-834. Getting instance details does not necessarily mean that
+   * the active namespace is the instance itself. The user can refresh the instance while
+   * being on a database or collection view.
+   */
   fetchInstanceDetails(state) {
     this.setState({
       hostname: state.instance.hostname,
       port: state.instance.port,
       processStatus: 'TODO: Get Replica Set Status',
       versionDistro: state.instance.build.enterprise_module ? 'Enterprise' : 'Community',
       versionNumber: state.instance.build.version,
-      activeNamespace: ''
+      activeNamespace: NamespaceStore.ns || ''
     });
   },