added qtenginio 5.4 branch customization to submodule updater

Change-Id: I5862301d0d9667bfff1a49566517800a6b234b54
Reviewed-by: Jani Heikkinen <jani.heikkinen@digia.com>
rename webengine 5.4 branch to 1.0

Change-Id: I781526b68541c72d4c76b5cc74457635208ec0ee
Reviewed-by: Jocelyn Turcotte <jocelyn.turcotte@digia.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@digia.com>