click-through the toplevel windows

The created toplevel windows (dps display, health bar and timer) will
now allow the mouse clicks to go through. To click on the items, ALT
must be pressed. This change introduces a dependency of win32gui and
win32con libraries. These are available through pip or from ActivePython
Update README.txt
summary dps display toggled on double click
Update README.txt
control check every 100ms on its on loop

The control check is done in its on tk loop instead of the run. Checks
if alt is pressed very 100ms, so it is more responsive.
adding ui configuration options
Merge pull request #4 from balkanpy/gw2dps_1.0

Gw2dps 1.0