Implement .paypal command
Summary: Code contained logic procedures, but not the dcc binds to call them.
Test Plan:
00:04:44 <Dereckson> .paypal 100 00:04:44 <daeghrefn> Net: 96.37 00:04:44 <daeghrefn> Gross: 103.75
Reviewers: dereckson
Reviewed By: dereckson
Differential Revision: https://devcentral.nasqueron.org/D1565