Convert Screenshot to a game HUD module widget

[codecorsair]

Convert the Screenshot module from the legacy module to a game HUD widget.

This thing:

[sysrage]

Need to implement issue #74.

[codecorsair]

So what's the status on this?

[sysrage]

If somebody wants what little progress I made, I can push my branch. Things came up preventing me from making progress. Sorry. Not sure when I can get back to it.

[UmbarPantera]

I have integrated ScreenshotShare and the ScreenshotButton into the HUD.

You can check out what I have done here

The empty button in the quick menu shows/hides the screenshot button. Clicking on the screenshot button takes a screenshot and shows a window to share the screenshot.
If you click on the screenshot button again, the window to share the screenshot hides atm. If you press the screenshot button again, the window gets visible again with a new screenshot.

While I was testing I came across a bug, that (as far as I know) has nothing to do with my changes:
The popup window to log in to facebook sometimes appears off screen. I couldn't reproduce it.