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 (closed) #80 (closed)