added left border for header cell in the scheduler view header table.
set fixed heights for table header row (the one containing the calendar names) and for the row that contains the today's date.
modified also the height of elements inside the row that hosts each of the calendars events.
modified inside renderItems method the code that handles the resizing of the elements in which the events of calendars reside.
The bug described as random height change of the current day row is fixed.