types for comparitor fields should be typed appropriately

[Jeff Hammel]

currently, all the RHS of the comparitor tests are textfields.

for 'is' and 'is not', these should be drop-downs if they are select fields on the ticket fields

for 'is in' and 'is not in', these should be checkboxes if they are select fields on the ticket fields

[Jeff Hammel]

notably, this will require redoing the admin interface in JS