Enable entry of pattern values for date/time types

[Stephen-Gates]

Expected Behaviour

When I choose date, time or datetime types, allow me to enter a format pattern and the pattern values using the allowed syntax

Current Behaviour

I cannot enter a pattern format for date/time data types.

note error is spec: frictionlessdata/datapackage#530

Your Environment

• Data Curator version 0.3.1
• Operating System macOS Sierra 10.12.6

[Stephen-Gates]

Required to support validation of Date and Times

Also required when we implement Open Data Package function as the schema may include the pattern option

[Stephen-Gates]

A tester reports, "Couldn’t work out how to fix my validation errors".

Note: Type = Date which means ISO8601 date format http://specs.frictionlessdata.io/table-schema/#date

To fix shown errors, need to support date with a format of Pattern

[Stephen-Gates]

So what formats are supported?

I wonder if there's a difference between specifying the pattern and validating the pattern?

Should we allow any pattern but warn if we can't vaildate?