plugin should use minervaDefine over define function to create plugin

frontend-js/src/main/js/minerva.js

@@ -104,7 +104,7 @@ function createDivStructure(element) {
   var splitBar = functions.createElement({
     type: "div",
     name: "minerva-plugin-split-bar",
-    style: "width:5px;height:100%;clear: both;display: table-cell;vertical-align:top",
+    style: "width:5px;height:100%;clear: both;display: table-cell;vertical-align:top;border-left:1px dotted gray;cursor:col-resize",
     content: "&nbsp"
   });
   element.appendChild(splitBar);

frontend-js/src/main/js/plugin/Plugin.js

@@ -59,7 +59,7 @@ Plugin.prototype.load = function () {
     var error = false;
     try {
       // noinspection JSUnusedLocalSymbols
-      var define = function (pluginFunction) {
+      var minervaDefine = function (pluginFunction) {
         try {
           if (typeof pluginFunction === "function") {
             pluginData = pluginFunction();

frontend-js/testFiles/plugin-invalid/invalid_register.js

-define(function () {
+minervaDefine(function () {
   return {
     register: function (object) {
       throw new Error("Let's crash");

frontend-js/testFiles/plugin-invalid/unclean-unregister.js

-define(function () {
+minervaDefine(function () {
   return {
     register: function (minervaObject) {
       options = {

frontend-js/testFiles/plugin/empty-without-function.js

-define({
+minervaDefine({
   register: function (object) {
     console.log("registering test plugin");
   },

frontend-js/testFiles/plugin/empty.js

-define(function () {
+minervaDefine(function () {
   return {
     register: function (object) {
       console.log("registering test plugin");

frontend-js/testFiles/plugin/highlight-something.js

-define(function () {
+minervaDefine(function () {
   return {
     register: function (minervaObject) {
       minervaObject.element.innerHTML = "<div><button id='show'>highlight something</button></div>";