Issue #229 - Add missing language strings to admin
More rational organization of code
Close #238 - Change Address fields order
Fix incorrect parameter reference
Close #251 - Ignore dashes in cc number
Issue #251 - ignore spaces as well
Add missing property comments
Minor formatting adjustments
Issue #255 - Add description fields to coupon API class
Issue #255 - Send all coupon data on validation
Minor formatting adjustments
Fix coupon discount currency issue