4A - ORDINANCE RELATING TO THE RULES OF PROCEDURE OF THE BOARD OF COUNTY COMMISSIONERS; AMENDING SECTION 2-1 OF THE CODE OF MIAMI-DADE COUNTY, FLORIDA; REVISING REQUIREMENTS RELATING TO NOTIFICATION PROVIDED BY THE COUNTY MAYOR OR COUNTY MAYOR'S DESIGNEE TO ALL APPLICABLE DISTRICT COMMISSIONERS OF CERTAIN MATTERS THAT ORIGINATE WITH THE ADMINISTRATION; PROVIDING SEVERABILITY, INCLUSION IN THE CODE, AND AN EFFECTIVE DATE