Change text for patrons; #713

Per feedback from fcktheatre in private email, this changes the message
displayed when funding goal is NULL from "I'm not here to receive tips;
I'll generally regift them" to "I'm here as a patron." I think this will
sit well with @jacobian and others from the open source community? Can
we make this work for both communities?
Bump version to 7.2.0
Bump version to 7.2.0-dev