Scijava port: Path management improvements

[tferr]

This is to log the recent improvements in path management. The user interface chosen for such tasks is the "All Paths" frame. The work is occurring on my scijava branch.

Already implemented features (partially tested):

• [x] Searchable list of paths
• [x] Tag paths with customizable colors
• [x] Custom SWC-type colors
• [x] Export of selected paths as ROIs
• [ ] Hierarchy edits through drag and drop dropped

Features needing fixes:

• [ ] Number of search hits in search bar is not accurate caused by reliance on outdated jide-oss
• [x] Auto-expand of selected nodes not working?
• [x] SWC-type colors are not applied once they have been customized

The new UI does not rely on IJ1, relying mainly on org.scijava.ui.swing. Currently it looks like this:

Any feedback more than welcome!

[tferr]

The PathManagerUI has changed dramatically since this was open. Most of the issues have been fixed