Make an Offer For Woocommerce 3.0.9

* Removed - Removed from email
* Removed - Removed Error Reporting
* Fixed - Fixed minor bugs

* Fixed - Minor bugs fixed
* Fixed - Tested with latest WC and WP version

* update - Trandformed settings area to WC native style
* update - Trandformed checkboxes to WC native style

* Added - Added classes to buttons for styling compatiblity with other themes
* Fixed - View Offer button not showing for variations