Fix references to `pv` and YAML fixtures.

build.sh

 #!/bin/bash
 
-exec sudo docker build -t aura/pv .
+exec sudo docker build -t steering-django .

cleanup.sh

 #!/bin/bash
 BASE_D=$(realpath "${BASH_SOURCE%/*}/")
 
-rm -f "$BASE_D/pv/dev_data.sqlite"
+rm -f "$BASE_D/steering/dev_data.sqlite"

entrypoint.sh

 #!/bin/bash
 set -e
 
-python /tmp/manage.py loaddata /tmp/program/fixtures/*.yaml
+python /tmp/manage.py loaddata /tmp/fixtures/*/*.json
 python /tmp/manage.py runserver 0.0.0.0:8000
 
 exec "$@"

manage.sh

 #!/bin/bash
 BASE_D=$(realpath "${BASH_SOURCE%/*}/")
 
-exec sudo docker run --rm -it -u $UID:$GID -p 127.0.0.1:8000:8000 -v "$BASE_D":/srv aura/pv /srv/manage.py $@
+exec sudo docker run --rm -it -u $UID:$GID -p 127.0.0.1:8000:8000 -v "$BASE_D":/srv steering-django /srv/manage.py $@

prepare.sh

 #!/bin/bash
 BASE_D=$(realpath "${BASH_SOURCE%/*}/")
 
-sudo docker run --rm -it -u $UID:$GID -v "$BASE_D":/srv aura/pv /srv/manage.py migrate
-sudo docker run --rm -it -u $UID:$GID -v "$BASE_D":/srv aura/pv bash -c "/srv/manage.py loaddata /srv/program/fixtures/*.yaml"
-sudo docker run --rm -it -u $UID:$GID -v "$BASE_D":/srv aura/pv /srv/manage.py createsuperuser --username equinox --email equinox@helsinki.at
-sudo docker run --rm -it -u $UID:$GID -v "$BASE_D":/srv aura/pv /srv/manage.py creatersakey
+sudo docker run --rm -it -u $UID:$GID -v "$BASE_D":/srv steering-django /srv/manage.py migrate
+sudo docker run --rm -it -u $UID:$GID -v "$BASE_D":/srv steering-django bash -c "/srv/manage.py loaddata /srv/fixtures/*/*.json"
+sudo docker run --rm -it -u $UID:$GID -v "$BASE_D":/srv steering-django /srv/manage.py createsuperuser --username equinox --email equinox@helsinki.at
+sudo docker run --rm -it -u $UID:$GID -v "$BASE_D":/srv steering-django /srv/manage.py creatersakey