Avoid changing of working directory and move test up higher

.travis.yml

@@ -58,6 +58,8 @@ script:
 - prove -Isrc/perl5 -r -j3 tests/perl_tests;
 - utils/jb_run.js -p 9000 & sleep 2
 - node_modules/.bin/phantomjs tests/js_tests/run-jasmine.js http://localhost:9000/tests/js_tests/index.html
+- utils/jb_run.js -p 8000 -s jbrowse & sleep 2
+- node_modules/.bin/phantomjs tests/js_tests/run-jasmine.js http://localhost:8000/jbrowse/tests/js_tests/index.html
 - xvfb-run node_modules/.bin/ava --timeout=60s tests/electron_tests
 - MOZ_HEADLESS=1 SELENIUM_BROWSER=firefox JBROWSE_URL=http://localhost:9000/index.html tests/selenium_tests/travis_wrapper.sh;
 # if we are building for inclusion into the `dev` branch, build the releases and test the minimal one too
@@ -73,8 +75,6 @@ script:
     cd $BUILD_DIR;
     MOZ_HEADLESS=1 SELENIUM_BROWSER=firefox NOSEOPTS="-I jasmine" JBROWSE_URL=http://localhost:9000/JBrowse-$RELEASE_VERSION/index.html tests/selenium_tests/travis_wrapper.sh;
   fi
-- utils/jb_run.js -p 8000 -s jbrowse &
-- node_modules/.bin/phantomjs tests/js_tests/run-jasmine.js http://localhost:8000/jbrowse/tests/js_tests/index.html
 - set +e
 after_failure:
 - cat setup.log