[INTERNAL] fix for typos and misspelled methods

I'm only looked at core classes in this patch.
warrantless that I found everything

Change-Id: I7f9d25bd17ca37737254cc8adae1a4013803d121
Reviewed-on: http://saros-build.imp.fu-berlin.de/gerrit/1901
Tested-by: Jenkins CI
Reviewed-by: Stefan Rossbach <srossbach@arcor.de>