Processing Rules - make list for available reports searchable

[#1]

When creating a new segment you first have to select e.g. the visit container. Then you have to select a report from the list of all available reports, s.props,eVars.... The list could easily reach hundreds of rows and it is hard to find the right row even it is in alphabetical order. Because translation is sometimes really surprising it's even harder if you are using a different language than English!

Regards,

Hjalmar