Refactor project structure to avoid indirection on multiple folders

[pablodiegoss]

Description

Jandig overtime had multiple deploy structures, development environments and helper scripts, those clutered the repository and haven't been used for a long time. Some folders made scripts harder and confusing, this PR makes the environment for development cleaner and simpler, removing unused and old files from the repo while fixing some configuration of the environment that broke statics and url patterns.

General tasks performed

• Removed the ARte folder from /src/
• Removed the /docker/ folder
• Moved docker-compose and Dockerfile to the root folder
• Fixed all docker context and citations of the original ARte folder and docker folder
• Included TINI as an entrypoint for faster development builds and tests
• Activated hot reload of files for gunicorn server

Have you confirmed the application builds locally without error? See here.

• Yes