Update pylintrc to disable fewer things.
Lint fixes for auth.py
grading.py lint fixes
unlock.py lint fixes
pylint only in server
Fix lint in server/apptest.py
Merge pull request #70 from Cal-CS-61A-Staff/client-pylint

Install Pylint in client
Merge branch 'master' into test-interface

Conflicts:
	client/grading.py
	client/tests/grading_test.py
Fix some client pylint errors