Minor UI tweaks to smoothen icons

- Greyed out icons for security UI
- Settings UI layout modifications
- Search popup menu theming
- Edge navigation setting panel opacity

Change-Id: Ie45b73399cf46f561ecf5801f969e63d8b1bba72
diff --git a/res/values/strings.xml b/res/values/strings.xml
index c28fafd..b737950 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -261,9 +261,9 @@
     <!-- Settings summary [CHAR LIMIT=50]-->
     <string name="pref_content_open_in_background_summary">Open new tabs behind the current tab</string>
     <!-- Settings label [CHAR LIMIT=50] -->
-    <string name="pref_content_homepage">Set homepage</string>
+    <string name="pref_content_homepage">Homepage</string>
     <!-- Settings label -->
-    <string name="pref_content_search_engine">Set search engine</string>
+    <string name="pref_content_search_engine">Search engine</string>
     <!-- Settings summary -->
     <string name="pref_content_search_engine_summary">Choose a search engine</string>
     <!-- Settings button label that to pick what to set the homepage to [CHAR LIMIT=40] -->