make ice override of commit method use the commitLocking version to ensure that the coreSegment gets locked

Remove mutex, make SimpleReaderBase copy-able. Set default properties when used without registerPropertyDefinitions().

added virtual destructor to finder info base classes, added collapse all button to memory gui, allow to get reader properties, allow memoryid as shortcut in aron

This reverts commit 18db5c8a.

renamed aron converters, added new aron filters and similarity, added memory_conversions to make code look nicer