AUI-1669 - Image Viewer Base throws error when no images or sources are provided
AUI-1669 - Source formatting
AUI-1772 Adds scheduler demo with many events for perf testing
AUI-1772 Improve performance of SchedulerTableView plotEvents method

This is changing SchedulerViewTable to look for intersections in a single loop and caching them before it starts rendering the view. When the rendering is done, the cached values will be used and a lot of duplicate calculations will be avoided.
AUI-1772 Fixing popover performance problem

Clicking on existing events was taking a long while to open popovers. I profiled scheduler and noticed this was happening because setting paths on YUI causes the contents to be cloned, which is taking a long while. I changed the call to instead set the main attribute with the desired values and this is not slow anymore.
AUI-1722 Fixing bug with finding intersections with filter
AUI-998 - cssClass attribute can be passed into Tooltip Delegate
AUI-998 - Adding tests
AUI-998 - Source formatting
AUI-1205 - datePicker fires selectionChange event when trigger is clicked
AUI-1205 - add unit tests
AUI-1205 - Source formatting
AUI-1205 Source formatting
AUI-1654 Custom form validator rules should be easier to find and define

* New attribute customRules added to make it easier to add new rules for the form validator.
* Custom rules are not added to a singular instance, but all instances of the validator.
* Use static function on FormValidator to add these rules.
* Update demo to show changes.
AUI-1654 Add unit tests for custom rules API
AUI-1654 - Source formatting
AUI-1654 Source formatting
AUI-1640 Scheduler should create SchedulerEvent instances lazily
AUI-1771 Display all events in scheduler's month view
AUI-1781 - Radio field is being automatically selected after it's dragged and dropped in the Form Builder. Beyond that, there is a documentation fix too.