UI console (#4631)

* adding columnify and ember-cli-cjs-transform

* add yargs-parser

* remove vendored yargs-parser tokenizer and use cjs transform to import it from actual yargs-parser

* add clear command that clears the log, but maintains history

* make codemirror have no gutter and be auto-height when rendered in the console output log

* add fullscreen command and hook up fullscreen toggle button

* hook up copy button

ui/tests/integration/components/console/log-error-test.js

@@ -0,0 +1,13 @@
+import { moduleForComponent, test } from 'ember-qunit';
+import hbs from 'htmlbars-inline-precompile';
+
+moduleForComponent('console/log-error', 'Integration | Component | console/log error', {
+  integration: true,
+});
+
+test('it renders', function(assert) {
+  const errorText = 'Error deleting at: sys/foo.\nURL: v1/sys/foo\nCode: 404';
+  this.set('content', errorText);
+  this.render(hbs`{{console/log-error content=content}}`);
+  assert.dom('pre').includesText(errorText);
+});