Request a Quote for WooCommerce 2.7.2

* Fix - Fixed double header and footer bug in emails.
* Fix - Fixed bug with quote success message.
* Fix - Fixed undefined operand error.
* Fix - Fixed typos.

* Fix - Fixed quote page creation issue.
* Fix - Typo fixed in PDF file.
* Add - Add enable or disable PDF download for customers.

Fix - Multiple Qoute Page Creation Issue.

Feature - Qoute PDF.

* Fix - Blocked access to quote page via direct link.
* Fix - Fixed translation issue for "SKU".

* Typo fixed in quote rules.
* Fixed bug with extra "li" added in menu.
* Improvement in mini quote basket design.

* Fixed uploaded files issue.