[Frontend] Initial styling for selectable styling

Fixes #1161
New .s-selectable, .s-hover, .s-selected and .s-moveable classes
New supporting color constants
Markup in layouts, fixed position/panels updated
Removed old commented code

platform/commonUI/general/res/sass/user-environ/_selecting.scss

@@ -0,0 +1,39 @@
+/*****************************************************************************
+ * Open MCT, Copyright (c) 2014-2016, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT 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 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.
+ *****************************************************************************/
+.s-selectable {
+    border: 1px solid transparent;
+
+    &.s-hover {
+        // Styles when hovering over a selectable object
+        border-color: $colorSelectableHov !important;
+    }
+
+    &.s-selected {
+        // Styles for a selected object. Also used by legacy Fixed Position/Panel objects.
+        border-color: $colorSelectableSelectedPrimary !important;
+    }
+
+    &.s-moveable {
+        @include boxShdwLarge();
+        cursor: move;
+    }
+}