DistroSeries:+queue page needs redesign

This page/form is currently:

 * Heavy (we can't afford rendering more than 20 items)
 * Complex (the browser domain does a nasty dance for pre-fetching indirect information, otherwise we get 4k queries, the template speaks by itself)
 * Inefficient (users can't really perform operations in batches, since the arguments are not always the same)
 * Ugly (!)

Few improvements the that comes to mind:

 * Improve the lookup parameters (date filters, exact matching, upload type)
 * Re-write the information pre-fetching infrastructure, benefiting of DecoratedResultSets and the experience with ArchiveSourcePublications.
 * Traverse and act on PackageUpload items individually ($distroseries/+upload/$ID)
 * Use ajax for fetching the uploaded-files information on demand
 * Use ajax/API/form-overlay for implementing pseudo-batching operations on the uploads list.
 * Ask beuno to help with a new shiny UI.