Minor updates to UI and included Models and ViewModels.

VM
- Activity
- Entry
- EntriesCollection (desktop app)

Model
- Activity and Entry (SQLite)
- Activity and Entry (unbacked)

UI
- Took time picker user control from [] and [], updated/tweaked to be
generic and editable, and applied to UI
- Added basic datatemplates to test databinding with new wpf controls
and VMs
- Found sleek and quick way to bind to property change

Defect?
- Noticed that you cannot use snoop on the app...doesn't pick it
up...wonder why???