sfc: mention that we can take stock donations
This is a new thing that SFC can do. I don't anticipate many such offers, but it doesn't hurt to mention it for completeness.
Updated pricing information of Gitbox (http://gitboxapp.com/)
hide invisible flippy book overflow
Replaced unmaintained private collection with Wiki list of GUI tools
drop Google Checkout link from SFC donation page
Google is discontinuing Checkout later this month, and SFC has asked all member projects to drop any links. Formatting-wise, this means we can drop the side-by-side table entirely, and "Paypal" becomes just another item in the list of <h3> sections.
…sary Community: no subscription necessary for firstname.lastname@example.org
Add a paragraph about the Cc policy and subscription (non)requirements for email@example.com, to reassure our bug reporters.