Entity dropdown improvement (#674)

* Ignore hass changes while dropdown is open

* Upgrade vaadin-combo-box

* Fix styling on dev-service panel

* Fix styling for ha-entity-dropdown

* Fix height vaadin-combo-box dropdown

* Rename ha-entity-dropdown to ha-entity-picker

* More entity improvement (#675)

* Update script and automation editor to use entity picker

* Add entity and service picker to service dev panel

* Lint

test-mocha/common/util/location.js

@@ -0,0 +1,38 @@
+import { hasLocation } from '../../../js/common/util/location';
+
+const assert = require('assert');
+
+describe('hasLocation', () => {
+  it('flags states with location', () => {
+    const stateObj = {
+      attributes: {
+        latitude: 12.34,
+        longitude: 12.34
+      }
+    };
+    assert(hasLocation(stateObj));
+  });
+  it('does not flag states with only latitude', () => {
+    const stateObj = {
+      attributes: {
+        latitude: 12.34,
+      }
+    };
+    assert(!hasLocation(stateObj));
+  });
+  it('does not flag states with only longitude', () => {
+    const stateObj = {
+      attributes: {
+        longitude: 12.34
+      }
+    };
+    assert(!hasLocation(stateObj));
+  });
+  it('does not flag states with no location', () => {
+    const stateObj = {
+      attributes: {
+      }
+    };
+    assert(!hasLocation(stateObj));
+  });
+});