hide Keeper behind authentication; restrict secrets to superuser only

Include original course schedule in summary

Separate links by white space

Add links to other Angela Yu courses from LAB

Complete course summary and thoughts

complete notes and download certificate

update subtree path reminder

apply minor style changes to bring Keeper and Secrets iconography closer together

remove express paths which can access raw JSX files and components

remove redundant reactjs css files

delete redundant jsx files

clean up redundant JSX files created during project merge

update notes on capstone project start

remove yarn.lock to try to get heroku errors to go away

touch yarn.lock