Beta time has come ! 🎉

WARNING: migrations have been reset one last time!

This MR concerns tones of little tweaks:

Reviewed:
* model moderation levels
* serializers.meta.fields value
* Viewset permissions
* on_delete values

Changed:
* Update dark theme color
* Added load prod base script
* beta logo on website
* Added missing about project markdown
* Added RGPD notice to all forms
* Put media files in a docker volume
* More frequent currency exhange rates update

Fixed:
* Front handling of scholarships
* Currencies conversion in the front
* Front theme icons color
* No default networks in prod docker compose to prevent nasty VM routing

Closes #135 #119 #96

* Full handling of RGPD/CGU validation
* management command to clean user personnal data created
* Added RGPD and CGU as markdown in the documentation (also used in the front)

Front:
* Multiple entrypoints for the different needs
* Added raw file loader
* bumped frontend image version
* More generic front template (for the multiple entries)
* Added NotFound Component
* More generic Markdown component (in regards to handling off-the-api situations and heading size)

Closes #67

* Added an app in the backend dedicated to the link with external data
* Create a command to update the data
* Support updating data from fixer
* Updated doc accordingly

Almost done #28

* Bumped material-UI to v4.0.0
* Fixed braking changes,
* Moved some components to React Hook along the way
* Fixed some bugs
* v0.4.0 of the frontend image,

---

Enhanced frontend of previous departure, still a WIP

* Added map tile server to docker-compose dev and prod
* Moved from leaflet to mapbox gl for vector tiles (changed npm dependencies)
* Custom map styles for light and dark mode
* Changed frontend map status saving (dropped redux / simpler static data saving)

Closes #117

* Deployment is now fully automated with docker / docker-compose (Backend served through uWSGI with Nginx)
* Logs are configured in django and handled by a dedicated docker service (and kept for 30 days)
* Frontend crash logging handled through the backend
* Quick documentation of the deploy setup

Fixes #110 Fixes #66

Also:

* Moved the envs directory to the more general server dir
* New Picture and File model/serializer/viewset added
* Image validator added (didn't use django image field as it wasn't supporting svg)
* Removed symbolink of assets from the frontend in the backend to make sure we can boot the server in no time

* JSON validation in now performed against `json-schemas` which give a standard way of handling this.
* All previous validation moved to new setup (`useful_links` field & `TaggedItem` in particular)
* Tags handling slightly updated (schemas are now hardcoded in the app and not stored in db)
* All new validators are unitested 🎉
* A bit of documentation added

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* Bumped backend image to version 0.2.1 with new python packages requirements
----

Fixes #112
Mentions #113 #57

* Dropped the use of Pandas & updated loading scripts accordingly
* Separated python requirements files
* Updated Dockerfile to be able to also build a production ready image (without dev dependencies)
* Backend images size cut in more than half 🎉
* Updated a bit the documentation related to Docker
* CI now depends on clear image tags
* Fixed the serializers of User and enhanced frontend of userinfo
* Fixed wrong compose in frontend

Fixes #108 #109 #104
Linked to #66 for new prod dockerfile

* **Added documentation regarding how to debug the backend and the frontend**
* Updated webpack config to ease debugging (no more mimify) and a bit better production config
* Added .env files to configure env variables in the project
* Updated backend image to support .env files
* Updated backend to use .env files
* Updated CI settings accordingly
* Added documentation about IDE setup
* Removed `.vscode` folder from repo

Fixes #106 #105 Linked to #66 for .env files

* The frontend dependencies are now cached in the docker images itself
* A little hack is used to restore them when needed ie: the `node_modules` folder is stored outside of the workdir and then brought in
* Images are now versioned on the registry
* The docker-compose file has been updated to use the new/versioned images.
* The documentation has been updated.
* And the Gitlab-CI has been tweaked.

* Filtering on client request should now be performed with the standard `?attr=...` syntaxe
* Frontend updated for this new syntaxe
* Backend and frontend documentation updated with new changes
* Updated the location of the the api documentation to `/api-doc`
* Fixed bug preventing api-doc to render
* backend python requirements updated
* Updated dockerfile / docker-compose to make sure we wait for the db

Fixes #97 #80

We now wait for the necessary static files to be generated before collecting the static files in the backend.

Fixes #88

* Reorganized documentation folder
* Rorganized documentation sidebar in browser
* Added documentation about notifications in the frontend #74
* Tweaks

Bonus: more readable docker-compose

Added some comments accross specific files