Improvements for makefile

- Comments
- Cleanup

Makefile

@@ -7,6 +7,7 @@ clean:
 	rm -rf .tox
 	rm -f .coverage
 
+# Perform database migrations (after schema changes are made)
 migrate:
 	python3 InvenTree/manage.py makemigrations company
 	python3 InvenTree/manage.py makemigrations part
@@ -16,40 +17,50 @@ migrate:
 	python3 InvenTree/manage.py migrate --run-syncdb
 	python3 InvenTree/manage.py check
 
-requirements:
+# Install all required packages
+install:
 	pip3 install -U -r requirements.txt
 
+# Perform initial database setup
 setup:
 	python3 InvenTree/setup.py
+	$(MAKE) migrate
+	$(MAKE) superuser
 
+# Create a superuser account
 superuser:
 	python3 InvenTree/manage.py createsuperuser
 
-install: requirements setup migrate superuser
-
+# Install pre-requisites for mysql setup
 mysql:
 	apt-get install mysql-server
 	apt-get install libmysqlclient-dev
 	pip3 install mysqlclient
 
+# Run PEP style checks against source code
 style:
 	flake8 InvenTree
 
+# Run unit tests
 test:
 	python3 InvenTree/manage.py check
 	python3 InvenTree/manage.py test build company part stock order
 
+# Run code coverage
 coverage:
 	python3 InvenTree/manage.py check
 	coverage run InvenTree/manage.py test build company part stock order InvenTree
 	coverage html
 
+# Install packages required to generate code docs
 docreqs:
 	pip3 install -U -r docs/requirements.txt
 
+# Build code docs
 documentation:
 	cd docs && make html
 
+# Make database backup
 backup:
 	python3 InvenTree/manage.py dbbackup
 	python3 InvenTree/manage.py mediabackup