Also includes:

sc tiled editing: Mapping has to be turned off after drawing the buttons.

Otherwise the redlines are on wrong positions in the tiled rendering case.

Also - we are actually never call with something else than MAP_PIXEL, so
let's kill the resetting of the mapmode; let's see if some obscure corner case
bites us here.

Change-Id: I8da07dd5448b8863df3148882ec50e6746760cca