TopView testcases fail for pyqt5 with basemap 1.1

[Joern Ungermann]

Somehow , inserted points are shown a little bit to the side, so the seoncd "delte" click does not hit it correctl.y

[Reimar Bauer]

Adjusted epsilon for topview to be more generous

With pyqt5 and basemap 1.10, somehow the newly inserted point is a bit away from the mouseclick. This upsets the testcase which inserts and deletes a point by clicking twice at the same location. Increased the epsilon a bit to take care of this inaccuracy.

Fix issue #312

→ <<cset eec8fe5f732b>>