Tweaked the release script's bower update part.

- Legacy-Id: 12914

bin/mkrelease

@@ -171,11 +171,13 @@ DEV="$(printf %d.%d.%d.dev0 $MAJOR $MINOR $NEXT)"
 #cd $DIR ??
 
 note "Updating bower assets ..."
-$do ietf/manage.py bower_install
+$do ietf/manage.py bower_install > /dev/null
+$do svn st ietf/externals/static | grep -v '^\?'
 $do svn commit ietf/externals/static -m "Updated bower-managed static web assets"
 # Get rid of bower-installed files which we don't use:
-$do rm $(svn st ietf/externals/ | grep '^\?' | awk '{print $2}') || true
 $do rm -rf ietf/externals/static/datatracker/
+$do rm $(svn st ietf/externals/ | grep '^\?' | awk '{print $2}')
+
 
 note "Collecting static files ..."
 $do ietf/manage.py collectstatic --noinput --ignore=bower.json --ignore='README.*' | grep -v "Found another file with the destination path"