feature(language storing)

* Added language model
* Added CSV data and loading script
* Language stored in course feedback

Fixes #116
Fixes #32 (Not really fixed, but language now store in feedback)
Status Job ID Name Coverage
  Check
passed #547336
docker
check_back

00:00:19

passed #547337
docker
check_front

00:00:59

 
  Test
passed #547338
docker
test_back

00:00:51

95.0%
passed #547339
docker
test_frontend

00:00:29

 
  Lint
passed #547341
docker
eslint

00:00:22

passed #547340
docker
flake8

00:00:14

 
  Svg Gen Docu
passed #547342
docker
generate_UML_svg

00:00:13

 
  Documentation
passed #547343
docker
pages

00:00:12

 
  Deploy
passed pages:deploy

00:00:00