Allow /filter/details to include a date range filter

As a user, I want to only select reviews for a specific time span via REST.

This is currently not possible using REST, however the underlying code supports it.

What is to do:

1. add 2 new query parameters to the /filter/details REST API
   1. fromDate, toDate - both long millis since epoch
2. add a fromDate/toDate to the ReviewFilterDef
3. Pass these values to the CrucibleReviewQueryBuilder in getReviewIdsAsRolesInStates, if these values are set

Then only reviews between those dates will be returned.
Leaving off a toDate will search all reviews up to now.
Leaving off a fromDate will search all reviews up to toDate.

Once this is done, tell mark@atlassian.com so he can update his Crucible Reviews Script to use these parameters.