Events with duration longer than a week don't render correctly on month view

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Completed
• Affects Version/s: 3.0.0, 2.0.0.38-deprecated
• Fix Version/s: 2.0.x, master, master-deprecated, 3.0.x, 2.0.0.39-deprecated, 3.1.x
• Component/s: Scheduler
• Labels: None

Steps to reproduce:
(1) Open scheduler demo
(2) Go to month view
(3) Click on one of the first days of the month and drag the mouse to another day at least 2 rows below it
(4) Click `Save` on the popup to save this event

Expected results:
The new event correctly shows up covering all the days of its duration.

Actual results:
The new event shows up covering only the days on the first week of its duration.

Note: This regression was caused by some changes done for performance by AUI-1772, which changed the logic of how month view events are rendered.