Preserve form(s) during navigation

The homepage sends a request for /v1/projects?forms=true, which returns each project's forms. Each form is returned with extended metadata. When the user clicks on a form in the list, I think we should try to preserve the form through the navigation rather than sending a new request for it. When the user clicks on a project in the list, I think we should try to preserve the project's form list. (I don't think we should try to preserve the project itself, because the homepage doesn't request extended metadata for projects. Because we specify ?forms=true, each project has some extended metadata, but not all the extended metadata we need.)

Similarly, the project overview shows a form list, for which we request extended metadata. When the user clicks on a form in the list, I think we should try to preserve the form through the navigation rather than sending a new request for it. I think we should do something similar for the Form Access page as well: that page links to each form.