Fix test in Text Field spec.
Add tests for jqc.tab.Bar.
Support Panel reordering within a TabPanel, and add tests for add/remove/reorder functionality.
Change Component's `elId` to always be a uniquely generated property, rather than a configuration option.
Remove unnecessary @method doc tags in Component.
A few doc tweaks in jqc.Component.
Optimize jqc.util.OptionsStore for code size using Lo-Dash, and add tests.