added helpful comments and removed no longer used roles/additional/ #401

	name: linting
	on: [push]
	jobs:
	linting-job:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- name: Set up Python 3.8
	uses: actions/setup-python@v4
	with:
	python-version: 3.8
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install -r requirements.txt
	pip install -r requirements-dev.txt
	- name: ansible_lint
	run: ansible-lint resources/playbook/roles/bibigrid/tasks/main.yml
	- name: pylint_lint
	run: pylint bibigrid

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