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/toBeCloseToSpec.js

@@ -0,0 +1,51 @@
+describe("toBeCloseTo", function() {
+  it("passes when within two decimal places by default", function() {
+    var matcher = j$.matchers.toBeCloseTo(),
+      result;
+
+    result = matcher.compare(0, 0);
+    expect(result.pass).toBe(true);
+
+    result = matcher.compare(0, 0.001);
+    expect(result.pass).toBe(true);
+  });
+
+  it("fails when not within two decimal places by default", function() {
+    var matcher = j$.matchers.toBeCloseTo(),
+      result;
+
+    result = matcher.compare(0, 0.01);
+    expect(result.pass).toBe(false);
+  });
+
+  it("accepts an optional precision argument", function() {
+    var matcher = j$.matchers.toBeCloseTo(),
+      result;
+
+    result = matcher.compare(0, 0.1, 0);
+    expect(result.pass).toBe(true);
+
+    result = matcher.compare(0, 0.0001, 3);
+    expect(result.pass).toBe(true);
+  });
+
+  it("rounds expected values", function() {
+    var matcher = j$.matchers.toBeCloseTo(),
+      result;
+
+    result = matcher.compare(1.23, 1.229);
+    expect(result.pass).toBe(true);
+
+    result = matcher.compare(1.23, 1.226);
+    expect(result.pass).toBe(true);
+
+    result = matcher.compare(1.23, 1.225);
+    expect(result.pass).toBe(true);
+
+    result = matcher.compare(1.23, 1.2249999);
+    expect(result.pass).toBe(false);
+
+    result = matcher.compare(1.23, 1.234);
+    expect(result.pass).toBe(true);
+  });
+});