Fix no-multi-assign in ES5

[MAILPOET-1033]

.eslintrc.es5.json

@@ -58,7 +58,6 @@
     "space-in-parens": 0,
     "semi": 0,
     "max-len": 0,
-    "no-multi-assign": 0,
     "no-trailing-spaces": 0,
     "global-require": 0,
     "no-throw-literal": 0,

assets/js/src/form_editor/form_editor.js

@@ -1052,7 +1052,8 @@ function info(value) {
       var noop = function() {};
       var methods = ['assert', 'clear', 'count', 'debug', 'dir', 'dirxml', 'error', 'exception', 'group', 'groupCollapsed', 'groupEnd', 'info', 'log', 'markTimeline', 'profile', 'profileEnd', 'markTimeline', 'table', 'time', 'timeEnd', 'timeStamp', 'trace', 'warn'];
       var length = methods.length;
-      var console = window.console = {};
+      window.console = {};
+      var console = {};
       while(length--) {
         console[methods[length]] = noop;
       }

assets/js/src/jquery.serialize_object.js

@@ -74,9 +74,10 @@ define(
           // * Rinse & repeat.
           for ( ; i <= keys_last; i++ ) {
             key = keys[i] === '' ? cur.length : keys[i];
-            cur = cur[key] = i < keys_last
+            cur[key] = i < keys_last
               ? cur[key] || ( keys[i+1] && isNaN( keys[i+1] ) ? {} : [] )
               : val;
+            cur = cur[key];
           }
 
         } else {

assets/js/src/newsletter_editor/behaviors/DraggableBehavior.js

@@ -89,9 +89,8 @@ define([
             y = (parseFloat(target.getAttribute('data-y')) || 0) + event.dy;
 
           // translate the element
-          target.style.webkitTransform =
-          target.style.transform =
-            'translate(' + x + 'px, ' + y + 'px)';
+          target.style.transform = 'translate(' + x + 'px, ' + y + 'px)';
+          target.style.webkitTransform = target.style.transform;
 
           // update the posiion attributes
           target.setAttribute('data-x', x);
@@ -99,7 +98,8 @@ define([
         },
         onend: function (event) {
           var target = event.target;
-          target.style.webkitTransform = target.style.transform = '';
+          target.style.transform = '';
+          target.style.webkitTransform = target.style.transform;
           target.removeAttribute('data-x');
           target.removeAttribute('data-y');
           jQuery(event.interaction.element).addClass('mailpoet_droppable_active');

assets/js/src/newsletter_editor/blocks/image.js

@@ -274,7 +274,7 @@ define([
 
       });
 
-      var theFrame = this._mediaManager = new MediaManager({
+      var theFrame = new MediaManager({
           id: 'mailpoet-media-manager',
           frame: 'select',
           title: 'Select image',
@@ -289,6 +289,7 @@ define([
           }
         }),
         that = this;
+        this._mediaManager = theFrame;
 
         this._mediaManager.on('insert', function() {
         // Append media manager image selections to Images tab