Show task hierarchy on export

When exporting a timeline to excel, users will now be able to adjust settings so that task hierarchy is always visible. Previously, the export would just send out a flat list of tasks. Now, if you check "Show action hierarchy in export," you'll see the full task hierarchy in the file.

Visually, the subaction titles will be indented so that they appear nested under the parent action. This will apply for all levels of nesting (indent sub-sub actions under their subactions and so on).

Thank you to Victoria at BDO and Mark at Wildtype for voting on this feature!