feat(standard filtering, tweaks): REST Api and other

* 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
6 jobs for !82 with fix/betterREST in 5 minutes and 24 seconds (queued for 2 seconds)
detached
Status Job ID Name Coverage
  Check
passed #490660
docker
check_back

00:01:08

passed #490661
docker
check_front

00:01:35

 
  Test
passed #490662
docker
test_back

00:00:49

90.0%
passed #490663
docker
test_frontend

00:00:46

 
  Lint
passed #490665
docker
eslint

00:00:50

passed #490664
docker
flake8

00:00:12