Feature Added - Date lookup and display

It’s not linked into all the proper places, but the initial “date detail” function is finally implemented. In the same basic mode of operation as “saint detail”, this returns a page with all the entries known for a particular date, as well as information about that date (currently Dominical Letter, Golden Number, and Roman Date). Future work will include some distribution graphs and a “Notes” field for the date, but at least there is a minimal function out there. Currently it is only linked from the date number in the “Saints by date” page, but that may increase.

There are a pair of permanent links, one as date id: http://cokl.wiglaf.org/p/v100/dateid/210 and another as the month/day: http://cokl.wiglaf.org/p/v100/date/7/29