Build DMP upload form

[briri]

Build out the DMP upload form based on the design from #97

• [x] Build out Lambdas for AJAX functionality (or new DMPTool API endpoints if we decide to go that route)
  • [ ] Would require RDS instance and scripts to populate/refresh data (copied from DMPTool code)
• [ ] Build CSS and basic page layout
• [ ] Build tests
• [ ] Build mechanism that allows API Gateway to serve up form (Lambda or pulled directly out of S3?)
• [ ] Update CloudFormation if necessary

[briri]

Closing this as the work was done in the DMPTool repo