Map tips get in the way of selection

[chrisclaydon]

When I try to perform actions in Fusion, I find that map tips often get in the way. This is particularly evident when trying to do a rectangle selection. If you wait too long before making the first click, the map tip pops up beneath the cursor, and you end up clicking on the tip rather than on the map. Then, once you’re dragging a rectangle, if you mouse over the map tip, you lose the rectangle. It’s really frustrating.

[pagameba]

(In [1722]) Fixes #196. Position maptip slightly further away from the cursor and hide it on mouse down so it doesn't interfere with other tools as much.

[pagameba]

(In [1724]) Re #196. Also suppress the maptip when the mouse moves while down.