StudentLifecycleObserver event callbacks are provided with a datetime object, not a string containing the time in ISO 8601 form, as the comment states. Also, as of [] this is definitely UTC and not local time, so mention that.
StudentLifecycleObserver event callbacks are provided with a datetime object,
not a string containing the time in ISO 8601 form, as the comment states.
Also, as of [] this is definitely UTC and not local time, so mention
that.

	Change on 2016/04/05 by tlarsen <tlarsen@google.com>

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=119070574

andela-angene/coursebuilder-core,andela-angene/coursebuilder-core,andela-angene/coursebuilder-core,andela-angene/coursebuilder-core