JS: minor fixes in kotlin-test-js-it

Jasmine version 2.6.0 doesn't support Promise-based
asynchronous tests.
Also the error message for an unexpected test result was incorrect.

libraries/kotlin.test/js/it/js/test-result-checker.js

@@ -30,7 +30,7 @@ Tester.prototype._check = function (name, result) {
     }
 
     if (result !== expected) {
-        this._errors.push('Unexpected test: "' + name + '"');
+        this._errors.push('Test "' + name + '" expected result "' + expected + '", actual result "' + result + '"');
         return;
     }
 

libraries/kotlin.test/js/it/package.json

@@ -7,7 +7,7 @@
     "test-tape": "tape js/tape-reporter.js js/tape-plugin.js build/classes/kotlin/test/kotlin-test-js-it_test.js"
   },
   "devDependencies": {
-    "jasmine": "^2.6.0",
+    "jasmine": "^2.9.0",
     "jest": "^20.0.4",
     "mocha": "^3.4.2",
     "qunit": "^1.0.0",