Minor GUI tweaks:

* Fix header margin for all table views to align with the table
* Fix margins in GUI map selector
* Removed node drop-shadow in the GUI topology by reducing blur to 0
* Adjusted device label sizing to favour more white-space than to clip and squeeze text

Change-Id: I9ef3eee30714a5aaa9337582d6b1a2e2fb2b302c
diff --git a/web/gui2-topo-lib/lib/panel/mapselector/mapselector.component.css b/web/gui2-topo-lib/lib/panel/mapselector/mapselector.component.css
index 59c0d78..3462a46 100644
--- a/web/gui2-topo-lib/lib/panel/mapselector/mapselector.component.css
+++ b/web/gui2-topo-lib/lib/panel/mapselector/mapselector.component.css
@@ -18,13 +18,17 @@
  * ONOS GUI -- Topology Map Selector -- CSS file
  */
 .dialog h2 {
-    margin: 0;
+    margin: 8px;
     word-wrap: break-word;
     display: inline-block;
     width: 210px;
     vertical-align: middle;
 }
 
+.dialog select {
+    margin: 8px;
+}
+
 .dialog .dialog-button {
     display: inline-block;
     cursor: pointer;