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/ExceptionsSpec.js

@@ -0,0 +1,64 @@
+xdescribe('Exceptions:', function() {
+  var env;
+
+  beforeEach(function() {
+    env = new j$.Env();
+    env.updateInterval = 0;
+  });
+
+  describe('with break on exception', function() {
+    it('should not catch the exception', function() {
+      env.catchExceptions(false);
+      var suite = env.describe('suite for break on exceptions', function() {
+        env.it('should break when an exception is thrown', function() {
+          throw new Error('I should hit a breakpoint!');
+        });
+      });
+      var runner = env.currentRunner();
+      var dont_change = 'I will never change!';
+
+      try {
+        suite.execute();
+        dont_change = 'oops I changed';
+      }
+      catch (e) {}
+
+      expect(dont_change).toEqual('I will never change!');
+    });
+  });
+
+  describe("with catch on exception", function() {
+    it('should handle exceptions thrown, but continue', function() {
+      var ranSecondTest = false,
+      suite = env.describe('Suite for handles exceptions', function () {
+        env.it('should be a test that fails because it throws an exception', function() {
+          throw new Error();
+        });
+        env.it('should be a passing test that runs after exceptions are thrown from a async test', function() {
+          ranSecondTest = true;
+        });
+      });
+
+      suite.execute();
+      expect(ranSecondTest).toBe(true);
+    });
+
+    it("should handle exceptions thrown directly in top-level describe blocks and continue", function () {
+      var ranSecondDescribe = false, suite, suite2, runner = env.currentRunner();
+      suite = env.describe("a suite that throws an exception", function () {
+        env.it("is a test that should pass", function () {
+         this.expect(true).toEqual(true);
+        });
+
+        throw new Error("top level error");
+      });
+      suite2 = env.describe("a suite that doesn't throw an exception", function () {
+        ranSecondDescribe = true;
+      });
+
+      runner.execute();
+      expect(ranSecondDescribe).toBe(true);
+    });
+  });
+
+});