Revert "Moved Update timer out of connect class"

This reverts commit 5276c215a61e3425c38402857bd78189435c3fc1.
Added Task Item Sort

Added ability to sort on each column header.
Can't change the width - have to auto-resize the dockpanel inside the
gridview headers to allow for the dockpanel to grow/shrink based on the
size of the header.