Editor: Minimap: Don't change the first line in the screen when tabbing/shift-tabbing a block with the minimap visible.
http://bugs.activestate.com/show_bug.cgi?id=101318
r=marky
rn=

(integrated from komodo (trunk) change 82886 by ericp)

git-svn-id: http://svn.openkomodo.com/repos/openkomodo/trunk@13919 b87d16e7-d29f-4ee1-b5ec-817d645d335f