[BLUEJ-223] Add expand/collapse functionality to naviview
Add a divider with the capability to expand or collapse the naviview. The setting of expanded/collapsed should be saved for future use of that Class. The default (first time use) for the naviview should be open but once changes have been made to the editor the setting should be saved so that the next previously unopened Class opens with that default setting.
Issue metadata
- Issue type: Task
- Priority: Medium
- Fix versions: 3.0.0