add stepHelp.ui and add help button in ubiquity.ui
change files gtk_ui.py plugin.py ubi-console-setup.py ubi-language.py ubi-partman.py ubiquity.ui ubi-usersetup.py for add help button
add search function
delete comments for ubi-language.py
add help button to ubi-timezone.py
Merge branch 'master' of github.com:IbpTeam/ubiquity