Project browser monitors file system for changes and scans directories incrementally (work-in-progress).
Project browser monitors file system for changes and scans directories incrementally (work-in-progress).

- Directories are read when a folder is expanded in the browser.
- Browser items are discarded when folders are collapsed in the browser.
- The file-system is monitored for changes and nodes in the project browser are updated on demand.
- A project browser item's collapsed state does not change during these updates.

In addition, the nodes file system tree is now read incrementally on demand.

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