Make default name for a session the current date and time
Make calendar textboxes uneditable by user to force them to use the calendar selector (will ensure that it's in the proper format)
Add initial text to calendar date boxes to tell the user that they have to use the 'Calendar' button to open the selector and pick a date
Add a check so that the session can only be created if a valid start and end date is selected
Change from both calendar dates not needing to be filled out to either to avoid the case where one is filled out and the other isn't from causing issues
Add 'Required' label to date/time.
Check to make sure the start date is before the end date.
Merge pull request #48 from sfmailand/sbl-dev

Make default name for a session the current date and time
Tested by: Alec Thompson - ajthompson