Add per-user favorites feeds, which will be broken when I merge in the performance fixes to CuratedFeeds.
Cherry-Merge pull request #1023 from NuGet/tilovell-987-curatedfeed_perf

Tilovell 987 curatedfeed perf
Conflicts:
	Website/App_Start/ContainerBindings.cs
	Website/DataServices/V1Feed.svc.cs
	Website/DataServices/V2CuratedFeed.svc.cs
	Website/Infrastructure/Lucene/LuceneIndexingService.cs
	Website/Infrastructure/Lucene/PackageSetFilter.cs
	Website/Services/PackageSource.cs
Get searchable favorite package feeds working. And updated synchronously when you click the button (why not).