Merge pull request #32 from aplanas/master

Replace check_screen method with assert_screen.
fix timeout
update wants network - trying with NO (to no avail)
Merge pull request #33 from os-autoinst/coolo_answer_no

update wants network - trying with NO (to no avail)
fix needle names
kate takes some extra time
don't use waitidle for ooffice
don't do extra sleeps
make sure the gnome screen lock is gone
catch update errors - bugzilla entries will come later
Merge pull request #34 from os-autoinst/coolo_catch_update_errors

catch update errors - bugzilla entries will come later
Remove waitinststage.