Add in another check for "debugger" on commit

Summary:
Also removes window.console.log since everyone seemed to not like that
one.

Test Plan:
ran it against a test file with 'debugger;' (watch it error)
ran it against a file without (watch it pass)

Reviewers: alpert

Reviewed By: alpert

Differential Revision: http://phabricator.khanacademy.org/D2100