#1625 Support multiple structural params and ones on top level nodes

[Anonymous]

Originally created by: psii...@gmail.com
Originally owned by: psii...@gmail.com

ZAP cant currently cope with structural params on 'top level' nodes, eg:
https://www.example.com/?page=home
it also cant cope with multiple structural params in one url:
https://www.example.com/?page=home&subpage=aaa

For the multiple structural params it will need to normalise the nodes so that we dont get:
+ https://www.example.com/
   + page
     + subpage
   + subpage
     + page

[Anonymous]

Originally posted by: psii...@gmail.com

The problems are fixed in [r6124] but I've noticed that the sites tree isnt recreated when the structural params are changed - thats another but I'll fix as part of this issue, whioch is why I'm not marking it as committed yet.