Ignore NotFound errors on plan delete
Need to load component language files from system plugin
improve payment method abstraction
Add logic for coupon usage on subscription page
Finer grained coupon controls
Issue #79 - Add coupon options to subscribe form
Make clearProperties() chainable
Consistent arg naming
Use correct unknown constant
Remove unused property
Allow creation of multiple containers
Remove usage of obsolete property
Change update server to osdeploy
Merge branch 'bill-development'