Make rake jasmine:ci run specs correctly.

- Will replace rake core_specs.
- Remove obsolete dependencies & files -- most of these were for build tasks we
  are no longer using. Notably, rspec and spec_helper were deleted.

spec/javascripts/html/ResultsNodeSpec.js

@@ -0,0 +1,62 @@
+describe("ResultsNode", function() {
+  it("wraps a result", function() {
+    var fakeResult = {
+        id: 123,
+        message: "foo"
+      },
+      node = new j$.ResultsNode(fakeResult, "suite", null);
+
+    expect(node.result).toBe(fakeResult);
+    expect(node.type).toEqual("suite");
+  });
+
+  it("can add children with a type", function() {
+    var fakeResult = {
+        id: 123,
+        message: "foo"
+      },
+      fakeChildResult = {
+        id: 456,
+        message: "bar"
+      },
+      node = new j$.ResultsNode(fakeResult, "suite", null);
+
+    node.addChild(fakeChildResult, "spec");
+
+    expect(node.children.length).toEqual(1);
+    expect(node.children[0].result).toEqual(fakeChildResult);
+    expect(node.children[0].type).toEqual("spec");
+  });
+
+  it("has a pointer back to its parent ResultNode", function() {
+    var fakeResult = {
+        id: 123,
+        message: "foo"
+      },
+      fakeChildResult = {
+        id: 456,
+        message: "bar"
+      },
+      node = new j$.ResultsNode(fakeResult, "suite", null);
+
+    node.addChild(fakeChildResult, "spec");
+
+    expect(node.children[0].parent).toBe(node);
+  });
+
+  it("can provide the most recent child", function() {
+    var fakeResult = {
+        id: 123,
+        message: "foo"
+      },
+      fakeChildResult = {
+        id: 456,
+        message: "bar"
+      },
+      node = new j$.ResultsNode(fakeResult, "suite", null);
+
+    node.addChild(fakeChildResult, "spec");
+
+    expect(node.last()).toBe(node.children[node.children.length - 1]);
+  });
+});