Convert existing buttons and links as outlined in
https://docs.google.com/document/d/1C-8z5nBAgZgh0mSiyJgg6jXwFwuUlNy2AU96GXBz_64/edit to PF4 compatible components and dry template code up as much as possible in the process

While doing this, also implement tracking hooks as described in
https://docs.google.com/document/d/1wT76SwtVpKIyGy6_Y5JYoo684AXDPQLB-X3xpZRn47o/edit#heading=h.vjw692gfo85j

// dev notes
Make sure to only use actual HTML buttons where post requests are performed. A link is a link. PF4 button component classes are element-agnostic.