Merged requested to merge 199-open-large-files-using-text-editor-by-default into develop
- Uses default text editor for Chi, CIF, SeText and ToolDef files that are >10 MiB to prevent performance issues.
- Note that:
- Files keep their custom icons.
- Files are still by default opened by their own editors.
- Only larger files are opened by the default text editor.
- Explicitly opening larger files with their own editor works as expected.
- Documentation updates are from !164 (closed).
Closes #199 (closed)