Fix for dynamic adminSegment
Entry#findByParams

Convert /entries and the #entries template tag both use Entry#findByParams. This is to provide consistent behavior between REST API and template tags to support things like: passing a slug for a bucket, relative time formats, and provide params like since/until/skip/limit etc.

Also makes author required on entries (some test cleanup) and adds a parser for "now" in Chrono.
More test cleanup
Break apart EntriesList

Add EntriesBrowser just for layout, subview EntriesList as a CollectionView, live-update stuff, populate author/bucket when saving (from passed IDs)
Improve hiding/showing empty state buttons, animate on itemAdded
Merge branch 'master' of https://github.com/asm-products/buckets