return strings instead of ints in ajax callback
use ajax nonce functions
Merge branch 'master' of git://github.com/sscovil/rewrite-flush-button
Added .POT file

* Added .POT file for language translation.
* Changed plugin URI to github repository.
Merge branch 'master' of https://github.com/trepmal/rewrite-flush-button

Conflicts:
	js/rewrite-flush-button.js
	rewrite-flush-button.php