get_qlik_version.js

//Related to the  is_personal_mode / desktop mode question:
//https://gist.github.com/theredpea/f0a927242332d4d9d1c9aaaa5aa700aa/edit

//But regarding the *version*, see "About Service API"
//https://help.qlik.com/en-US/sense-developer/November2017/Subsystems/AboutServiceAPI/Content/AboutServiceAPI/AboutServiceAPI-Get-SystemInfo.htm

//https://hostname/api/about/v1/systeminfo

//Example URL:
//https://usrem-nnd.qliktech.com/api/about/v1/systeminfo

//Example results:
{
"contentHash": "c2a34eda6f0cdb202eb2fc7a19d6a23f",
"senseId": "qliksenseserver:11.24.1",
"originalClassName": "Composition",
"version": "11.24.1",
"deploymentType": "QlikSenseServer",
"releaseLabel": "November 2017",
"deprecatedProductVersion": "4.0.X",
"productName": "Qlik Sense",
"copyrightYearRange": "1993-2017"
}

//There is also the getVersion method on app.model
//https://gist.github.com/theredpea/14b8649301b24e9c74773ab00af091bb
//which is an actual engine call apparently: QvVersion
//   
getVersion: function() {
          return this.session.rpc({
              method: "QvVersion",
              handle: -1,
              params: []
          }).then(function(e) {
              return e.result.qReturn
          })
      },