This change has lead to complaints about diff views opening
in apparently random places for users with several splits.

This reverts commit 02b3a79c.

Conflicts:
	src/plugins/diffeditor/diffeditorplugin.cpp
	src/plugins/subversion/subversionplugin.cpp

Change-Id: I2eab8ff2d88a9e12f4dc7ec3a9ca65455daf15e2
Reviewed-by: Eike Ziller <eike.ziller@digia.com>