run each jasmine node test separately

run each jasmine node test separately

This is a workaround for the strange error message

TypeError: Cannot call method 'getAttribute' of undefined
    at Object.pzHttpRequest._handleResponse (http://mkws.indexdata.com/pazpar2/js/pz2.js:1018:38)
    at request.onreadystatechange (http://mkws.indexdata.com/pazpar2/js/pz2.js:939:21)
    at dispatchEvent (/jenkins/jenkins-varlib/jobs/mkws/workspace/test/node_modules/jsdom/node_modules/xmlhttprequest/lib/XMLHttpRequest.js:570:25)
    at setState (/jenkins/jenkins-varlib/jobs/mkws/workspace/test/node_modules/jsdom/node_modules/xmlhttprequest/lib/XMLHttpRequest.js:589:14)
    at IncomingMessage.<anonymous> (/jenkins/jenkins-varlib/jobs/mkws/workspace/test/node_modules/jsdom/node_modules/xmlhttprequest/lib/XMLHttpRequest.js:427:13)
    at IncomingMessage.EventEmitter.emit (events.js:117:20)
    at _stream_readable.js:920:16
    at process._tickCallback (node.js:415:13)