Added collections-lang3 dependency for `StringUtils`.  Love me some
StringUtils.
Fixed timesheet "save".

Added timesheet "delete" (requires debug $cookie).
Updated TimeSheet model to use LocalTimes array.  Updated view.
Updated logback.xml
Fixed: Intermittent failure to reload list after create/edit.

Fixed: Fix "Save" Timesheet.

Complete: Update TimeSheet data model

Misc. debug cleanup for demo.