http://work.netxforge.com/issues/343
- Improvements in providing a ResourceMonitor to Charts. 
- Set the default file name and extension when exporting. 
- Create a cache of old imported ID's, let the importer consult the 
cache, when looking for a reference. 
- errors in static and dynamic export filters. 
- Remove external references to a file Resource.
http://work.netxforge.com/issues/345
Let AbstractScreen implement the creation of a toolbar on a section. 
http://work.netxforge.com/issues/345
- turn of viewer comparer, viewer will not use hashlookup
- refactoring, comments etc..
- Refactoring / cleanup