fixed bugs in Escape Paint 0.7

-TRP-Block save bug (Escape Paint 0.6 did not save blocks greater than
 32K pixels)
-Floodfill bug (Escape Paint 0.6 crashed, when startpoint was on the
 screen bottom)
-Moduleinterface bug (After calling a module with modulesettings and clicking
 on the menuentry "New Picture" the program crashed.
-Degas Zoom bug
-Fileselector in Modulesettings set now the new path correctly
-Module Bug (errors after pressing 'S' in a Modulescreen)