Browser: add to customize and show useragent

Add for carrier feature which requires to use useragent with
specified format. We try to load carrier useragent if needed
and show useragent in "about" menu item.

CRs-Fixed: 516733

Change-Id: Ifae25644d9ad5387684e3ff1e691e20db9a45e2a
diff --git a/res/values/strings.xml b/res/values/strings.xml
old mode 100755
new mode 100644
index 14e3ca5..e03b576
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -1022,4 +1022,6 @@
     <!-- Add for Carrier Feature.Content description for exit menu item -->
     <string name="exit">Exit</string>
 
+    <!-- Add for Carrier Feature.Content description for about menu item -->
+    <string name="about">About</string>
 </resources>