Merge pull request #36 from tschqr/master

Compare jquery object with DOM element fix by @tschqr
We should not assume that jQuery is attached to window.
Updated js/jquery.tablednd.js, fixed mouseCoords() for touch
Merge pull request #40 from mathieumg/jquery_nowindow

We should not assume that jQuery is attached to window
Merge pull request #41 from bacinsky/hotfix/mousecoords-touch

Updated js/jquery.tablednd.js, fixed mouseCoords() for touch
Don't try to detect a touchscreen.

Touch devices and mouselike pointing devices can be connected and
disconnected at any time, so the only good thing to do is accept both
kinds of events.
Merge pull request #44 from tschqr/touchfix2

Don't try to detect a touchscreen.
Revert "Fix touch events."

This reverts commit 37fa89a398f2ce4944430a040f6b4bd121a085c2.

A different fix (touchfix2) has been applied upstream and will be merged
here next.
Merge branch 'master' into tsc