fix very ancient typo in CheckCollision() that would cause check for collision at bottom and right instead of movement direction

part #2

my attempt of "detach rope if the Land[] vanishes"

fixing Palewolf's if-merging-whoopsy there. should unbreak build

fix sticky rope issue

revert ed78465973f6 ("detach rope if the Land[] vanishes") for now, some questionable/troublecausing parts there.

Avoid drawing if there's a hog/object behind

Make flakes smaller by popular demand.

Added tag Hedgewars-iOS-1.2.2 for changeset 5ea3d182415e

merge and fix my typos