Merge pull request #16 from dfberry/master

Samples are on Umbraco 7.2.1 Merchello 1.6.0.2
Merge pull request #17 from dfberry/master

m-531
show confirmation link for PayPal payment

Signed-off-by: Konstantin <konstantin@scandiaconsulting.com>
Merge pull request #18 from KonstKhrist/master

show confirmation link for PayPal payment
Merge remote-tracking branch 'merchello/master'
revert paypal-too-specific change for samples