s/enforcement/compliance/

Karen asked for this change.

Note that annual supporters are not auto-renew.

We long ago decided not to auto-renew annual supporters. However, three
different potential supporters mentioned they were unsure, so this note
is added to clarify.

Improve Supporter appeal re: number of Supporters

The Supporter appeal didn't discuss the two different targets in much
detail. This change explains a bit better where the "service split" is
between what we can do with 750 Supporters vs. 2,500 Supporters.

Karen helped with this change.

Update totals of payments made

Also move payments together.

Create renewal option on form.

This adds a renewal option to the form.

Soften language on monthly supporter benefit issue

Monthly supporters actually do currently receive their t-shirt when
they've given at least $60. They also are listed immediately.

In an effort to make monthly Supporters feel a bit better about the
delay, this text is improved to explain the situation a bit better.

Various improvements and changes.

* Correct URLs not to include Conservancy's own site.

* Various wording changes.

* Some HTML formatting fixes.

Fork from original-supporter-appeal.html.

This new appeal file will be a rewrite of the original supporter appeal.