fixed bug in indicating if selected time range has no data
made message show up for stream that is not in the archiver; added simulator for streams with metadata but are not in the archiver
Merge branch 'master' into restricted-streams to update with bug fixes
In this commit:
1) Updated simulator to share stream metadata selectively.
2) Fixed bugs in stream tree and in permalink as a result of previous changes.
3) Ensured desirable behavior when logging in and out with streams selected
4) The updated metadata.py is still in the uPMU-daemon directory. It will be moved in a future commit