GUI -- Icon service work:
- Changed color of check and xmark icons for dark and light themes.
- Only appends glyphs that don't have a "-" as the name.
- Wrote unit tests for new icons.

Change-Id: Ia21fa33673e3adcfd8717f899d226b0d24dfcc51
diff --git a/web/gui/src/main/webapp/app/view/device/device.html b/web/gui/src/main/webapp/app/view/device/device.html
index 754aae9..08b40ec 100644
--- a/web/gui/src/main/webapp/app/view/device/device.html
+++ b/web/gui/src/main/webapp/app/view/device/device.html
@@ -7,7 +7,12 @@
         <thead>
             <tr>
                 <th></th>
-                <th>URI</th>
+                <th>URI
+                    <div class="inline-icon"
+                         icon icon-id="tableColSortAsc"
+                         icon-size="10">
+                    </div>
+                </th>
                 <th>Vendor</th>
                 <th>Hardware Version</th>
                 <th>Software Version</th>