Map Modal does not close automatically when selecting a lesson from map

[mstellaluna]

Challenge Name
Not a challenge - main page issue

Issue Description
When selecting a lesson from the modal, it re-directs you to the challenge but the modal does not close automatically, you need to use the 'x' to close out the modal.

This happens from the map on the main page and also if you select the 'View the curriculum' button when on a lesson to view the map.

Browser Information
Browser Name, Version:
Firefox Quantum 60.0.1 (64-bit)
Chrome: Version 66.0.3359.117 (64-bit)
Operating System: Windows 10 Pro 64-bit
Mobile, Desktop, or Tablet: Dell Latitude Laptop (15")