upd - now workflow action can be empty
fix - NPE if using empty workflow - now it writes to log message and only comment the task
rft - use isEmpty/isNotEmpty instead of null != smth && !smth.equals("")
add - tests for changing workflow, checking for null name of action, use mokito 1.9.5
add - merge with actual master
rft - merge with actual master - imports optimize
Merge pull request #38 from lanwen/commentingemptywrkflow

Commenting without change workflow