Merging with repo and creating lab 4

.gitlab-ci.yml

README.md

lab_1/templates/index_lab1.html

lab_1/tests.py

lab_1/views.py

lab_2/templates/description_lab2addon.html

lab_2/tests.py

lab_2/urls.py

lab_2/views.py

lab_4/.tests.py.swp

lab_4/.tests.py.un~

lab_4/__init__.py

lab_4/admin.py

lab_4/apps.py

lab_4/migrations/__init__.py

lab_4/models.py

lab_4/tests.py

lab_4/tests.py~

lab_4/views.py

lab_instruction/lab_3/README.md