.travis.yml: move JS builds to the top
.travis.yml: move JS builds to the top

draegtun/ren-c,giuliolunati/ren-c,hostilefork/rebol,hostilefork/rebol,draegtun/ren-c,draegtun/ren-c,rgchris/ren-c,hostilefork/rebol,giuliolunati/ren-c,draegtun/ren-c,rgchris/ren-c,rgchris/ren-c,rgchris/ren-c,giuliolunati/ren-c,rgchris/ren-c,giuliolunati/ren-c,draegtun/ren-c,hostilefork/rebol,hostilefork/rebol,draegtun/ren-c,hostilefork/rebol,giuliolunati/ren-c