Convert Upload Schema to Multiple Components

[serenackuo]

Types of changes

• Bugfix (change which fixes an issue)
• New feature (change which adds functionality)
• Refactor (change which changes the codebase without affecting its external behavior)
• Non-breaking change (fix or feature that would causes existing functionality to work as expected)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Purpose

• Convert single modal panel of upload schema/input schema code into multiple-stage modal housing multiple components
• Add Readme and License

Approach

• Added multiple components to house within the modal
• Use react router to load different components within modal window
• Reconfigure component tree to respond to revised interface structure
• Write Readme.md with full markdown
• Compile error on "Link To" within SchemaModal - but non-code-breaking

Screenshot(s)

[mstronck]

Love the new look. There is an error whenever we load up the app, but nothing we don't know about and nothing breaking.

[catherinechiu]

amazing readme 👍