chore(bower): Fix bower dependency conflicts

Close angular-gantt#595

Author: Toilal

bower.json

@@ -27,11 +27,11 @@
     "test"
   ],
   "dependencies": {
-    "angular": "~1.5",
-    "angular-moment": "~0.10.3"
+    "angular": ">=1.3",
+    "angular-moment": "~1.0.0-beta.4"
   },
   "devDependencies": {
-    "angular-mocks": "~1.5",
+    "angular-mocks": ">=1.3",
     "jquery": "~2",
     "angular-ui-tree": ">=2.15.0",
     "jsPlumb": "jsplumb#~2.0.5"