Update dependencies

package.json

@@ -29,7 +29,7 @@
   },
   "homepage": "https://github.com/kiswa/TaskBoard#readme",
   "devDependencies": {
-    "angular2": "^2.0.0-beta.16",
+    "angular2": "^2.0.0-beta.17",
     "bourbon": "^4.2.7",
     "bourbon-neat": "^1.7.4",
     "chai": "^3.5.0",
@@ -45,7 +45,7 @@
     "gulp-imagemin": "^2.4.0",
     "gulp-mocha": "^2.2.0",
     "gulp-phpunit": "^0.14.0",
-    "gulp-sass": "^2.2.0",
+    "gulp-sass": "^2.3.1",
     "gulp-scss-lint": "^0.3.9",
     "gulp-typescript": "^2.13.0",
     "gulp-uglify": "^1.5.3",
@@ -54,7 +54,7 @@
     "reflect-metadata": "0.1.2",
     "rxjs": "5.0.0-beta.6",
     "scss-base": "^1.1.0",
-    "systemjs": "^0.19.26",
+    "systemjs": "^0.19.27",
     "zone.js": "^0.6.12"
   }
 }