Ability to delete sticky and published posts from "Post status" module

Fix #40 and Fix #2
Move all option page to a top level menu

Fix $41
Fix undefined notice and strict warning
Change the class name of custom field addon message box
Add support for deleting posts based on title

Fix #39
Remove screen_icon which is no longer used in WordPress 2.8
Add dashicons for Bulk Delete root menu
Bump up version number to 4.4 for release
Regenerate pot file for v4.4