7.2 HR Fix #214433 - predefined queries are never executed

Description: 
http://netbeans.org/bugzilla/show_bug.cgi?id=214433

a jira query execution is blocked before its UI isn't populated. A server defined query provides no setup UI, though the lock was acquired as well and never released. 

Fix:
The fix is trivial - do not lock the query execution for server defined issues. 

Impact assessment:
very visible - server defined queries do not execute. 

Risk assessment:
not expected - the fix is trivial. The locking is necessary only in case there are some input fields when setting up a query. This isn't the case.

fix was verified by QE and reviewed by Ondrej Vrabec

Changesets:
http://hg.netbeans.org/core-main/rev/3aa86965c34c

thanks for a review
t.