Add frontend assets and plugin bundles

Add the legacy frontend themes, scripts, and plugin assets required by the main SPOTA interfaces.

assets/plugins/gmaps/test/spec/LayerSpec.js

@@ -0,0 +1,50 @@
+describe("Adding layers", function() {
+  var map_with_layers, single_layer, multiple_layers = [];
+
+  beforeEach(function() {
+    map_with_layers = map_with_layers || new GMaps({
+      el : '#map-with-layers',
+      lat: -12.0433,
+      lng: -77.0283,
+      zoom: 12
+    });
+  });
+
+  describe("Single layer", function() {
+    beforeEach(function() {
+      single_layer = single_layer || map_with_layers.addLayer('traffic');
+    })
+
+    it("should be added in the current map", function() {
+      expect(single_layer.getMap()).toEqual(map_with_layers.map);
+    });
+
+    it("should be removed from the current map", function() {
+      map_with_layers.removeLayer('traffic');
+      
+      expect(single_layer.getMap()).toBeNull();
+    });
+  });
+
+  describe("Multiple layers", function() {
+    beforeEach(function() {
+      if (multiple_layers.length == 0) {
+        multiple_layers.push(map_with_layers.addLayer('transit'));
+        multiple_layers.push(map_with_layers.addLayer('bicycling'));
+      }
+    });
+
+    it("should be added in the current map", function() {
+      expect(multiple_layers[0].getMap()).toEqual(map_with_layers.map);
+      expect(multiple_layers[1].getMap()).toEqual(map_with_layers.map);
+    });
+    
+    it("should be removed from the current map", function() {
+      map_with_layers.removeLayer('transit');
+      map_with_layers.removeLayer('bicycling');
+
+      expect(multiple_layers[0].getMap()).toBeNull();
+      expect(multiple_layers[1].getMap()).toBeNull();
+    });
+  });
+});