gestures: fix disambiguation between two finger pinch and scroll
The changes introduced in b5b6f835 to add support for hold gestures introduced a regression:
The mechanism that was in place to improve the disambiguation between two finger pinch and scroll during the beginning of the gesture stopped working and instead a bug warning was printed on the log.
Fix the regression and document the disambiguation mechanism in the gesture state machine diagram.
Fix #726 (closed)
Edited by José Expósito