support for JQL queries to second resolution on datetime fields.

Users who are familiar with mainstream SQL expect to be able to specify date fields down to the second.

We would like to be able to format JQL queries as follows:

createdDate >= "2013-01-11 00:00:00" and createdDate <= "2013-01-11 23:59:59"

We know that date data is stored in the database down to the second, as using createdDate <= "2013-01-11 23:59" excludes any issues created during the last minute of the day.