Refactored application#current_email and #current_user_cache_key to use #current_user_or_nil.
Refactored application#current_email and #current_user_cache_key to use #current_user_or_nil.

osbridge/openconferenceware,ondrocks/openconferenceware,mynameisfashanu/openconferenceware,osbridge/openconferenceware,mynameisfashanu/openconferenceware,ondrocks/openconferenceware,osbridge/openconferenceware,mynameisfashanu/openconferenceware,ondrocks/openconferenceware,mynameisfashanu/openconferenceware,osbridge/openconferenceware,ondrocks/openconferenceware