Hallo toolbar shown in wrong place on keyboard selection

[bergie]

After merging the pull request #24, the Hallo toolbar is now shown inconsistently:

• When selection is made with mouse, the toolbar is shown under the selection, as intended
• When selection is made with keyboard, the toolbar is shown above the element that Hallo is enabled for

Ping @rryter for getting this fixed.

[rryter]

Hello bergie

I have spotted the issue: on the "keyup" event the event properties "event.pageY & event.pageX" are undefined.
So the function "_getToolbarPosition" can not position the Toolbar correctly.

I'm trying to find a workaround for this now.

[bergie]

@rryter the _getCaretPosition method provides such a workaround, but for some reason is not called any longer:

https://github.com/bergie/hallo/blob/master/hallo.coffee#L252

[bergie]

Fixed by #26