Add pagination to package states search

[Etheryte]

See e.g. https://localhost:8080/rhn/manager/systems/details/packages?sid=1000010006&#search

Currently this page lists everything that comes out of the search in one super long list. Understandably, this doesn't work too well. It would be nice to add pagination to this page, as currently the page just freezes if there are enough results.