Allow click to toggle notes while in translation mode

[ToksT]

How about allowing to hide notes via clicks even while in translation mode? We could replace "click to insert note" with "drag to insert note", and disregard "dragging" < 10 px as "clicking".

Related: #1496

[Lightforger]

Since the "ignore_click_until" hack was designed to stop hiding the notes on a "create note with a click" event, i just removed that, along with the "create note on a click" line.

Minor note;
A "click" event only changes to a "drag" event after dragging 3~4 pixels (default browser behavior), so when dragging between 4 & 9 pixels, it won't create a new note nor toggle the display.

[Lightforger]

Undid my fix;
On opera, the click event is not fired if you dragged more then a few pixels.
On firefox/chrome, the event does get fired as long as you are still over the image when releasing the mousebutton.

I'm not too sure how to properly implement this