Sidebar: rename media-globe/ to media_globe/ (#1973)

So that it can be an importable package.
This is in preparation for setuptools packaging.

plugins/Sidebar/media_globe/Detector.js

@@ -0,0 +1,60 @@
+/**
+ * @author alteredq / http://alteredqualia.com/
+ * @author mr.doob / http://mrdoob.com/
+ */
+
+Detector = {
+
+  canvas : !! window.CanvasRenderingContext2D,
+  webgl : ( function () { try { return !! window.WebGLRenderingContext && !! document.createElement( 'canvas' ).getContext( 'experimental-webgl' ); } catch( e ) { return false; } } )(),
+  workers : !! window.Worker,
+  fileapi : window.File && window.FileReader && window.FileList && window.Blob,
+
+  getWebGLErrorMessage : function () {
+
+    var domElement = document.createElement( 'div' );
+
+    domElement.style.fontFamily = 'monospace';
+    domElement.style.fontSize = '13px';
+    domElement.style.textAlign = 'center';
+    domElement.style.background = '#eee';
+    domElement.style.color = '#000';
+    domElement.style.padding = '1em';
+    domElement.style.width = '475px';
+    domElement.style.margin = '5em auto 0';
+
+    if ( ! this.webgl ) {
+
+      domElement.innerHTML = window.WebGLRenderingContext ? [
+        'Sorry, your graphics card doesn\'t support <a href="http://khronos.org/webgl/wiki/Getting_a_WebGL_Implementation">WebGL</a>'
+      ].join( '\n' ) : [
+        'Sorry, your browser doesn\'t support <a href="http://khronos.org/webgl/wiki/Getting_a_WebGL_Implementation">WebGL</a><br/>',
+        'Please try with',
+        '<a href="http://www.google.com/chrome">Chrome</a>, ',
+        '<a href="http://www.mozilla.com/en-US/firefox/new/">Firefox 4</a> or',
+        '<a href="http://nightly.webkit.org/">Webkit Nightly (Mac)</a>'
+      ].join( '\n' );
+
+    }
+
+    return domElement;
+
+  },
+
+  addGetWebGLMessage : function ( parameters ) {
+
+    var parent, id, domElement;
+
+    parameters = parameters || {};
+
+    parent = parameters.parent !== undefined ? parameters.parent : document.body;
+    id = parameters.id !== undefined ? parameters.id : 'oldie';
+
+    domElement = Detector.getWebGLErrorMessage();
+    domElement.id = id;
+
+    parent.appendChild( domElement );
+
+  }
+
+};