Style list view

-Remove usage of dataTable widget -- It is too confusing working with a
 separate widget, and dataTable's split header causes lots of alignment
 issues -- this will be re-implemented in listView

-Style table and quick-view column
Browser widget: Modify behavior

-For better screen real-estate, make all
 browser panes open to full width of content area by default, unless
 partial: true is passed in options

-Remove animation effect, for quicker browsing
Search bar: add placeholder text