Maintenance release

[PBXg33k]

This release mainly contains changes and optimizations under the hood.

• Major improvements in the Docker image
  • Now includes nginx and exposes port 80 & 443
  • Use of Supervisor to monitor & restart services
  • Fixes in paths
  • Log info and errors to docker output
• Replaced libraries from lib with composer packages
  • Exception of R
  • Replaced PHP Image Workshop with Intervention Image library
  • Replaced direct guzzle calls with BrowserKit and Guzzle
• Use of exceptions where things go wrong
• Replace Phar with Zip to handle zip files

[Sunako]

What

[PBXg33k]

I continued work on a fork refactoring stuff and adding features, this MR was meant to go in my fork's master.