Add text to upgrades page and all product pages

Upgrade page

At the bottom of the panel describing all of our products, add the following text:

"Purchasing our products is an invaluable donation to the financial sustainability of Minds and its community."

Token, Pro, Plus, Nodes product pages

Directly above the button to purchase the product, add the following text:

"Purchasing our products is an invaluable donation to the financial sustainability of Minds and its community."