Query profiling link only for successful queries. Fixes #74
Provide a simple way to return to fragment overview using breadcrumbs.
Fix that links are not highlighted in graph.
Add help text to empty graphs.
Update myria-python
Fix help text outside plot, change cursor for clickable pixel
Faster animation, show help text again when we reset view, show label for collapsed fragment
Merge pull request #75 from uwescience/domoritz-profiling-usability

Domoritz profiling usability