Group incremental assignments

Visualizations and group incremental assignments are now functional.

Full Changelog: v4.7.1...v4.7.2

Introductory content in place

We've added an introductory screen based around the logo - made interactive through the magic of SVG! We've also got an 'about CoLab' animation, but not much more than that is in place just yet.

Some usability fixes

Usability fixes. Foundations for optimized queries for determining next scenario.

v4.4

Full Changelog: v4.3...v4.4

Key issue resolved

v4.2

updated keys and removed debug

Updated connections to other services

Patched up accidentally leaked holes by updating keys.
All other functionality is in line with the previous (v4.0) release.

Migrated to RoR API + react

Migrated traditional page-based Ruby-on-Rails (RoR) application to RoR API fronted by a react single-page application (SPA). This includes:

• Migrating to token-based authentication
• Webpacker configuration
  This also includes the setup of Docker container-based testing and development.