Cap amber parts b/c breaking changes of 0.15.0.

bower.json

@@ -24,13 +24,13 @@
     "tests"
   ],
   "dependencies": {
-    "amber": ">=0.14.17",
+    "amber": ">=0.14.17 <0.15.0",
     "lyst": "^0.1.2",
     "xontent": "^0.1.0"
   },
   "devDependencies": {
     "amber-ide-starter-dialog": "^0.1.0",
     "amber-contrib-legacy": "^0.2.1",
-    "helios": ">=0.5.3"
+    "helios": ">=0.5.3 <0.6.0"
   }
 }