* Resolved D0003: Add day separators.
* Created ``daySeparatorTemplate`` for ICanHaz templating.
* Refactored ``EntryListView.render`` to spit out day separators in between
days on the timeline. Fixed the "Today" separator to the top of the entry
container. We no longer prepend entries to the entry container, we now put
them after the top separator in the entry container.
* Created ``EntryListView.formatDaySeparator`` to format the labels
according to the relative time to today: "Yesterday", "Last Monday",
"Friday, May 28" for example.
* Removed the cludgier ``toWords``, ``daysApart``, and `` capitalize``
functions that were going to serve the same purpose.
* Resolved D0021: Constrain notes width to mark.
* Transformed the test database to match the new data model. Added
``ts_ext_data`` table and moved ``ts_user.ext_data`` values to it.
* Added D0022: cascade delete ``ts_ext_data`` when ``ts_entry`` record is
deleted.
* Completed refactor of ``ts_api`` functions to account for extended data:
* ``post_entry/3``
* ``put_entry/3``
* Created ``ts_entry:write/2`` to write extended data atomically with the entry.
* Fixed copy/paste bug in ``ts_ext_data:create_table/1``.
* Fixed implementation of ``ts_ext_data:set_property/3`` to be explicit about
taking a record, not a reference. It then extracts the reference and passes it
to the underlying implementation in ``ts_ext_data:do_set_property/3``.
* Refactored ``ts_ext_data:do_set_property/3`` to take a record *reference*, not
the record itself.
* Refactored the ``ts_ext_data:get_property/2`` and
``ts_ext_data:get_properties/1`` functions to return key value tuple pairs,
not ``ts_ext_data{}`` records.
