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/html/HtmlSpecFilterSpec.js

@@ -1,18 +0,0 @@
-describe("j$.HtmlSpecFilter", function() {
-
-  it("should match when no string is provided", function() {
-    var specFilter = new j$.HtmlSpecFilter();
-
-    expect(specFilter.matches("foo")).toBe(true);
-    expect(specFilter.matches("*bar")).toBe(true);
-  });
-
-  it("should only match the provided string", function() {
-    var specFilter = new j$.HtmlSpecFilter({
-      filterString: function() { return "foo"; }
-    });
-
-    expect(specFilter.matches("foo")).toBe(true);
-    expect(specFilter.matches("bar")).toBe(false);
-  });
-});