Autopopulation of date fields.

# READY

New functionality to automatically add a 'to' date value in the node edit form and time on stanford_event node types.

1. Only adds functionality on the event node type
2. Formats the time and date to match field settings
3. Adds change highlight yellow fade
4. Not configurable
5. Adds exactly 1 hour to the time field without manipulating the date.
6. If an end user changes the to time field manually the automatic updating event is removed

This functionality has been added to the event type only. It could possibly be abstracted and tied into the field settings to allow other content types to use this functionality.