ONOS-4359: continued work on theming UI
- updated xClose glyph
- replace double with single quotes in glyphData.js
- fixed close button on AppView details panel

Change-Id: I1e9139d096bdb4836710f019b5ee4e1c3c6e69e5
(cherry picked from commit 1fc873b)
diff --git a/web/gui/src/main/webapp/app/view/app/app.css b/web/gui/src/main/webapp/app/view/app/app.css
index 1b6069e..5957d8e 100644
--- a/web/gui/src/main/webapp/app/view/app/app.css
+++ b/web/gui/src/main/webapp/app/view/app/app.css
@@ -55,8 +55,8 @@
 
 #application-details-panel .close-btn {
     position: absolute;
-    right: 10px;
-    top: 0;
+    right: 26px;
+    top: 26px;
     cursor: pointer;
 }