Add ButtonLink component

[nai888]

Langua Version

0.1.4

Expected Behavior

Buttons should behave like button and links should behave like links. There shouldn't be a link that looks like a button.

Actual Behavior

The Help and Back buttons are currently links that look like buttons. Fix this.

Steps to Solve

Create a ButtonLink, a button that reroutes to a new URL by wrapping it in withrouter.

Also add cursor: pointer CSS to all buttons for visual affirmation of interactivity.