CANVAS-244, updated custom js file to remove new extra footer div before adding our own (QA version)

Pull for QA branch 

JIRA: https://jira.media.berkeley.edu/jira/browse/CANVAS-244
COMMIT: https://github.com/elicochran/calcentral/commit/74b2633e52710ee43f2d983af6002a6a2e01d065