adds simple notifications

* adds simple user centered notifications #202
* adjusts QLDs to Component Ontology
Update QLDGenerator.java

qlds for SourceObject's should be ignored, not TargetObjects!
improved read only mode, fixes #206
adds fixing of alternative names to admin utils #184
improvements for plato 4.4

* copies of read only projects are marked as 'playground'
  can be identified easier for clean up
* improves user notification #202
* removes bogus security measures
* fixes bug where xcdl descriptions of samples were not imported/exported properly
Merge branch 'master' into integration
* merges readme