Improve code readability.
Add note about pillar.get() vs salt['pillar.get']() in templates, Fix #7566
use python_shell=False when using external inputs
use python_shell=False on external inputs
don't use python_shell for external inputs
more conversion to python_shell=False
remove unused old commented out code
Clean out extra line
fileserver.*_list*: ensure prefix filtering

Should fix #7404

Conflicts:
	salt/fileserver/__init__.py
Fix logical condition which was breaking useradd.
pylint fix for fileserver routine