getCollectionURL
getCollectionURL

Adding a method to get the controller's collection URL, if the Controller in fact has a collection attached to it and it is an instance of Page

A better name for this function might be getThisCollectionObjectURL  but I don't know if that is too long-winded.


Former-commit-id: 42a53a6cef4ae37b6817df39f11f2bcb4d2328a6
jaromirdalecky/concrete5,mlocati/concrete5,hissy/concrete5,triplei/concrete5-8,concrete5/concrete5,mainio/concrete5,hissy/concrete5,deek87/concrete5,haeflimi/concrete5,concrete5/concrete5,acliss19xx/concrete5,concrete5/concrete5,biplobice/concrete5,deek87/concrete5,olsgreen/concrete5,hissy/concrete5,jaromirdalecky/concrete5,mlocati/concrete5,jaromirdalecky/concrete5,a3020/concrete5,KorvinSzanto/concrete5,MrKarlDilkington/concrete5,hissy/concrete5,rikzuiderlicht/concrete5,mlocati/concrete5,concrete5/concrete5,mlocati/concrete5,rikzuiderlicht/concrete5,KorvinSzanto/concrete5,a3020/concrete5,MrKarlDilkington/concrete5,deek87/concrete5,biplobice/concrete5,triplei/concrete5-8,olsgreen/concrete5,haeflimi/concrete5,triplei/concrete5-8,KorvinSzanto/concrete5,mainio/concrete5,deek87/concrete5,biplobice/concrete5,acliss19xx/concrete5,jaromirdalecky/concrete5,haeflimi/concrete5,acliss19xx/concrete5,rikzuiderlicht/concrete5,haeflimi/concrete5,MrKarlDilkington/concrete5,biplobice/concrete5,olsgreen/concrete5,mainio/concrete5