Description of problem:
Editor task form for human task show empty form (look like task form does not exist, but it is in package) when use space character in Task Name. 

Version-Release number of selected component (if applicable):
BRMS 5.3.1 ER2, designer 2.3.1-DEV

How reproducible:
Add space into Task Name

Steps to Reproduce:
1. create new process(start->human task->end)
2. set Task Name to "task name:
3. generate task forms for process
4. focus on human task and choose icon (Edit Task Form)
  
Actual results:
Windows is displayed, but there is empty form.

Expected results:
Windows is displayed and contains generated task form.

Additional info: