Description of problem:
In environment variable editor, add a env variable and update it twice. The notification message only prompt up once.

Version-Release number of selected component (if applicable):
openshift v1.5.0-alpha.0+b7eca0d-178

How reproducible:
Always

Steps to Reproduce:
1. Create a dc
$ oc run mydc --image=aosqe/hello-openshift
2. Go to config page and set a new env variable https://xxx:8443/console/project/<project_name>/browse/dc/mydc?tab=environment
3. Update the variable twice, check the message at the top of page when it's updated again.

Actual results:
If user does not close the message when the variable is updated at the first time, there is only one message.

Expected results:
There should be the 2nd message prompt up when user update the variable at the 2nd time.

Additional info: