Helps to resolve #19
Adds accepted offer email class;
Helps resolve #19
Includes offer notes in email
 and includes offer notes in comment added
upon save offer. Helps to resolve #19.
Adds api endpoint for adding offer to cart.
Adds api errors/msg output to woocommerce notice msg.
Adds offer meta data to cart item data.
Locks price and quantity on offer items in cart.
Adds checks - valid/expired offer before add to cart.
Adds email out when accepting offer from list (ajax).
Corrects meta panel placement CSS styles.
Helps to resolve #19
Merge branch 'issue#19' of https://github.com/angelleye/offers-for-woocommerce into issue#19
Merge branch 'issue#41' into issue#19
Merge branch 'dev' into issue#19