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/core/matchers/toBeTruthySpec.js

@@ -0,0 +1,38 @@
+describe("toBeTruthy", function() {
+  it("passes for 'truthy' values", function() {
+    var matcher = j$.matchers.toBeTruthy(),
+      result;
+
+    result = matcher.compare(true);
+    expect(result.pass).toBe(true);
+
+    result = matcher.compare(1);
+    expect(result.pass).toBe(true);
+
+    result = matcher.compare("foo");
+    expect(result.pass).toBe(true);
+
+    result = matcher.compare({});
+    expect(result.pass).toBe(true);
+  });
+
+  it("fails for 'falsy' values", function() {
+    var matcher = j$.matchers.toBeTruthy(),
+      result;
+
+    result = matcher.compare(false);
+    expect(result.pass).toBe(false);
+
+    result = matcher.compare(0);
+    expect(result.pass).toBe(false);
+
+    result = matcher.compare('');
+    expect(result.pass).toBe(false);
+
+    result = matcher.compare(null);
+    expect(result.pass).toBe(false);
+
+    result = matcher.compare(void 0);
+    expect(result.pass).toBe(false);
+  });
+});