Support date-time data types

If it looks like a date or time, treat it as a date-time data type. Right clicking should display a list of functions like "week number", "day of week", "month", etc.

Imported from BitBucket: https://bitbucket.org/instedd/mbuilder/issue/83
Originally Reported By: Nicolas di Tada
Originally Created At: 2014-01-16 14:47:38+00:00

instedd / mbuilder

Support date-time data types #83