JBIDE-18506 - Usage plugin sometimes locks JBT/JBDS

https://issues.jboss.org/browse/JBIDE-18506
Usage plugin sometimes locks JBT/JBDS
by running initialization async, isn't there a chance that the screen resolution isn't initialized when it's requested (see #getScreenResolution(), line 107). Shouldn't we blocking wait for the screen resolution to be available?