HPCC-11587 Add 'Open In New Page' to Package Map area

The code for the Package Map display is upgraded to support
the function of 'Open In New Page'.

Signed-off-by: wangkx <kevin.wang@lexisnexis.com>
Ok, I wil add a line 'return response;' to follow your good habit. I will change my code in other files also.