Fix for issue #243 and #244, Waypoint numbering issue

When waypoints where generated by a polygon they did not received the
right numbering. Due to this the waypoints could not be uploaded to the
APM. This also removes the constant "0" from the polys title.
Merge pull request #246 from albinhubsch/master

Fix for issue #243 and #244, Waypoint numbering issue
Merge branch 'master' of https://github.com/arthurbenemann/droidplanner.git into Survey