Merge pull request #414 from srp33/dependabot/npm_and_yarn/front_end/picomatch-2.3.2

Bump picomatch from 2.3.1 to 2.3.2 in /front_end

Closed #406 and tweaked other buttons for consistency

Merge branch 'master' of github.com:srp33/CodeBuddy

Improved styling of hints and moved pair-programming indicator

Merge pull request #410 from srp33/dependabot/npm_and_yarn/front_end/immutable-5.1.5

Closed #408

Added the ability to email students

Merge pull request #411 from srp33/dependabot/pip/front_end/tornado-6.5.5

Bump tornado from 6.5.1 to 6.5.5 in /front_end

Bump immutable from 5.0.3 to 5.1.5 in /front_end

Updated Pillow version

More work on fixing issues with date/time strings

Fixed issue with dates being stored inconsistently

Fixed issue with dates being stored inconsistently