Introduce a Moldable Lepiter Page Collection Wrapper

[onierstrasz]

Lepiter database queries return a collection or stream of pages. Instead we should wrap the result in a dedicated collection class (i.e., a Moldable Collection Wrapper) so that we can add dedicated views (e.g., visualizations or analyses of the contents of the pages).

[onierstrasz]

There already exist the classes LeCollection and LePages, but strangely these are not used to wrap the results of Spotter searchers. Should they?

[onierstrasz]

AC says: I do not think LePages is currently used. At one point we had some dedicated tools for exploring groups of pages, but seems we do not use them any more. LeSnippets is used within a page to store snippets.
If you want to get custom objects from spotter searches I’d use typed streams instead of typed groups.
We have TGtStreamGroup.