Added mixin for preview-hiding modal confirmations

import App from './App.vue'

import store from './store'

import UIkit from 'uikit';

Vue.config.productionTip = false

Vue.mixin({

  methods: {

    modalConfirm: function(modalText) {

      var self = this;

      // Stop GPU preview to show modal

      self.$root.$emit('globalTogglePreview', false)

      var showModal = function(resolve, reject) {

        UIkit.modal.confirm(modalText)

        .then(function() {

          resolve()

        }, function () {

          reject()

        })

        .finally(function() {

          // Reenable the GPU preview, if it was active before the modal

          console.log("Re-enabling GPU preview")

          self.$root.$emit('globalReenablePreview')

        })

      }

      return new Promise(showModal)

    }

  }

})

new Vue({

  store,

  render: h => h(App)