Add stub capabilities for tr clicking to identify which row
Add focus row events and stripe colors for focused rows
Complete toggle and redraw functionality of focus row events
Add notion of "focused" row

Will allow external actions to be performed on a particular row through
the getFocusedRow accessor

Insodoing, changed the way subrows are indexed. Removed use of
parentIndex and opted for a comma-delimited index. This will better
extend for multi-level subrows in the future.
Don't focus the row if the checkboxes in the static row are clicked
Lint updates, no functional changes
Rework row heights to fix relative position div problem in FF