[JENKINS-22222] Validates parameter names by checking they can be handled in Jenkins core

See [JENKINS-22222](https://issues.jenkins-ci.org/browse/JENKINS-22222) for details.
It works as following:

Jenkins 1.466:
![dochecknameonjenkins1_466](https://f.cloud.github.com/assets/3115961/2492633/d2a9a69c-b244-11e3-87b6-ade50abdd31a.png)

Jenkins 1.532.2:
![dochecknameonjenkins1_532_2](https://f.cloud.github.com/assets/3115961/2492634/0ca468e6-b245-11e3-802a-29e33664ffc4.png)