Updates to SWE browser's options menu

- Changed the contents of the menu
- Iconified frequently used items
- Changes to layout and menu animation
- Removed popup menu from History and Bookmarks page
-- Added buttons to these pages to replace menu items
- Updated icons used in popup menu
- Added menu option to save link to homepage
- Add bookmark icon color depicts if bookmark exists

Change-Id: I37226506737647367f71159f1a439cc3fca4ae03
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 61f4c36..67134a1 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -238,6 +238,8 @@
     <string name="copy_page_url">Copy page URL</string>
     <!-- Menu item -->
     <string name="share_page">Share page</string>
+    <!-- Menu item for saving link to homescreen -->
+    <string name="add_to_homescreen">Add to homescreen</string>
     <!-- Menu item for saving a page for offline reading. This is a view-only snapshot of the page. [CHAR LIMIT=50] -->
     <string name="menu_save_snapshot">Save for offline reading</string>
     <!-- Dialog message that is shown while saving a page for offline reading. [CHAR LIMIT=50] -->