* code_samples/project_view_pane: Cleanup:
- fix bug with not refreshing "svg" files and add supporting "jpeg" extension
- fix not working "Folders Always on Top" switch
- fix extracting file extension
- change disposable from Project to ProjectViewPane
- use BulkFileListener instead of VirtualFileListener with Alarm for updating the tree for immediate updates
- use Application.invokeLater instead of SwingUtilities.invokeLater
- code cleanup
* code_samples/project_view_pane: Add project.getDisposed() condition to the Application.invokeLater() call
* code_samples/project_view_pane: Do not count non-project files
* code_samples/project_view_pane: Do not update UI too often
Add notes about AnnotationHolder changes
Update upsource links per inspections
Fixes deprecation warning for AnnotationHolder
Compiles, but deprecation warnings for AbstractTreeBuilder, AbstractTreeUpdater, AnnotationHolder