fixed case with no result variables
close Integrator dialog by ESC key
Revert "close Integrator dialog by ESC key"

This reverts commit 3f1666a970dae199615a2c53b0353deaa8d1af18.
fixed case with no result variables
 * make entries in parameter lists unique
 * avoid pChild.GetRelIdent(doc) when looping over parameters of variable tree