Donate: Replace AIME Logo with animation

[mischacolley]

@lulen11 and I discussed an idea to replace the AIME Logo in the model with a little animated illustration of where $$ go.

Something like https://gallery.mailchimp.com/ce86e2fc6ca77a51919157a03/images/c1b527ff-87d0-40fc-b86b-ed7da58320b1.gif but maybe more light weight without a background and done with https://lottiefiles.com/ CC @charliemckenzie

[mischacolley]

JMB wants to include the text "Donate to AIME to change the planet". Maybe we could remove the logo and use this as a temp heading before moving to animation?

[lulen11]

Have temporarily made a little image and used it in the modal but @charliemckenzie and I have been talking about Lottie and more things we can do here.