library patches

- some irrecoverable instances of tag corruption during reading now
recoverable
- library resfresh request now fire properly
update

- LibraryFilter widget renamed to LibraryView
- fixed LiveDirs, ReactFX dependency + added javadoc
- TableCell factories and helper methods for TableView & MenuItem in
Util
- simplified Player class
- currentMetadata simplified, changes now EventStreams
- tabs pre-autocreate layouts now
commit finish