fix titles of add-slice and edit-users dialogs
fix titles of add-slice and edit-users dialogs

zdw/xos,open-cloud/xos,cboling/xos,zdw/xos,cboling/xos,opencord/xos,zdw/xos,opencord/xos,zdw/xos,open-cloud/xos,cboling/xos,opencord/xos,cboling/xos,cboling/xos,open-cloud/xos