Simplify service properties object.

ctkDictionary and ctkProperties are now both typedef for a QHash.
Improve slot performance for framework listeners by tuning the hash value.
More small performance tweaks for the plugin fw.
Added performance unit test for the plugin framework.
Use the hight precision timer in the event admin plugin.
Fixed event admin unit test.

The old ctkDictionary class lead to wrong behavior when matching
ctkEventHandler services containg a filter string with the events
send through the event admin (property keys where matched case
insensitively). Since this has been fixed, the number of consumed
events is different now (1).
Added event admin performance unit test.
Fixed Windows warnings.
Fixed name clash with REGISTERED macro from windows.h.
Merge branch 'plugin-fw-performance-improvements'