[Frontend] Themes added to Timelines

open #208
Espresso and Snow now supported; bulk of
work done except for minor cleanups, like zoom
buttons; Dragging not working currently in Timelines;

platform/features/timeline/res/sass/_constants-espresso.scss

@@ -0,0 +1,42 @@
+/*****************************************************************************
+ * Open MCT Web, Copyright (c) 2014-2015, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT Web is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT Web includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+
+// General
+$timelineHeaderColorBg: lighten($colorBodyBg, 5%);
+$timelineColorAlt1: lighten($timelineHeaderColorBg, 10%);
+$colorGanttBarBg: #5555aa;
+$colorGanttBarFg: #fff;
+$colorGanttBarSelectedBg: #ccc;
+$colorGanttBarSelectedFg: #333;
+$colorGanttBarTabularFgIcon: #8594ff;
+
+// Swimlane colors
+$colorDropTarg: rgba($colorGanttBarBg, 0.4);
+$colorSwimlaneSelectedBg: #222;
+$colorSwimlaneSelectedFg: #ccc;
+$colorGanttToggle: $colorKey;
+$shdwGanttBar: rgba(black, 0.4) 0 1px 3px;
+
+// Resource graphs
+$timelineResourceGraphBg: rgba(black, 0.2);
+$timelineResourceGraphFg: $colorBodyFg;
+$timelineResourceGraphLegendFg: $colorBodyFg;