[GPS](6.3.z)Empty Task Does Not Generate Claim/Complete Form

Description of problem:
When creating a process, if I model an empty task (no variable assingments, task name), only a group entry, then the resulting form generated does not have the buttons to complete

Version-Release number of selected component (if applicable):
6.3.0.DR2

How reproducible:
100%

Steps to Reproduce:
1. Create a process with a human task. Only fill out the Groups field, do not make assingments, do not fill out any task name
2. Build and deploy
3. Claim the task

Actual results:
No buttons in form to save/complete/release task

Expected results:
Buttons to save/complete/release the task present

Additional info:
This is a contrived example, but its the type of thing that a beginner just using the product might do (or someone who knows the product but is being lazy). This type of task should either a) fail compilation or b) product a workable form.

From my testing, so long as the task has a name (even if no task name is present), then the form generates properly.

I have a demo env you can use these bugs. Please email me at jholmes@redhat.com for access.