Scope: Release of v0.9.0

Major release introduces the final new features for v1.0 release. This completes the
Swing implementation with bound List, Table and ComboBox, as well as partial support
for bound multiple selections for Lists and Table. This release also introduces a new
sample TimeSheet application. Work now continues on bug-fixing for the production
release.

The new work on STable is not as thoroughly unit tested as the rest of the code.
Full automatic two way binding for multiple selections is not yet complete.
This work is in progress and will be included in the next release.

* Added error handler for trying to get ModelManagers for a null model.
* Consolidated implementation of Swing ListModel, TableModel and ComboBoxModel.
* Allow List and ComboBox to bind to a static model at setup time.
* Added ListModelAdapter and ListModelSource (roytman).
* Added Timesheet sample application (mosesjones).
* Cleaned up samples that use Combos and Tables.
* Removed org.scopemvc.model.util.CommonSelectors.
* Added combobox sample into the main LaunchpadLauncher.
* Added multiple selection for SList and STable.