When accidentally mark a row in the correction table as resolved, it can
now also be reverted. When clicking on "Unresolve" the status will be
changed to "Changed".

Automatically open,close and update Gitlab MRs

See merge request !402

When opening a Pull request in the GitHub repo, this will automatically
open a MR in the jugit repo. This contains the description, and also the
MR template from the jugit repo.

When this PR is updated, e.g., description changed, status changed, the
corresponding MR is also updated.

When the PR is closed and not merged, the MR gets also closed. When it
is reopenend, also the MR gets reopened.

Overall this is a convenience change, for everyone using GitHub to
contribute.

Fix old pet files without EXTENDED_MODEL parameter

Closes #528

See merge request !400

quick include fix

See merge request !397

getting started intrinsic + extrinsic video update

See merge request !396

Resolve "Annotate status and interaction level for a group of people"

See merge request !378

Resolve "reorder goto, start, end"

Closes #513

See merge request !385

Resolve "Sequence FPS not set leads to "silently" failing video export"

Closes #491

See merge request !390

update regression test files for old intrinsic models

Closes #516

See merge request !391

Simon python refactoring

See merge request !392

Resolve "Optimize container usage"

Closes #298

See merge request !393

Resolve "GitHub Action pushes master after sync - double Pipeline"

See merge request !395

Resolve "Extrinsic calibration add calc button"

Closes #436

See merge request !388

include cleanup

See merge request !384

Add new contributors

See merge request !394

Update ReadMe.md

See merge request !389

Docu update

See merge request !386

- new getting started (with videos!)
- misc changes all over the documentation

Resolve "Delete `fix` in path-options of tracking"

Closes #511

See merge request !383

make Animation member of petrack

Closes #519

See merge request !387

Resolve "Naming and order of file->export menu items"

Closes #455

See merge request !380

update toctree Planning and Tracking

See merge request !382