Add merge request template with check list for reviewers

Closes #301

See merge request !217

fix: Adapt copyToQImage for greyscale images

Closes #338

See merge request !224

Use ctrl+scroll to change the number of displayed ID in show only

Closes #335

See merge request !219

Add tooltip to map height

Closes #278

See merge request !215

Remove unintentionally added vertical spacer

Closes #337

See merge request !220

Update links in ReadMe

See merge request !218

Merge branch '327-add-method-for-vector-rotation-for-converting-to-world-coordinate-system' into 'master'

Resolve "Add method for vector rotation for converting to world coordinate system"

Closes #327

See merge request !212

Merge branch '283-make-sure-that-the-offscreen-plugin-is-also-included-in-windows-installer' into 'master'

Explicitly install qoffscreen.dll in windows installer

Closes #283

See merge request !216

Remove global pointer to Control

Closes #330

See merge request !213

Replace all Q(Double)SpinBoxes with P(Double)SpinBoxes

Closes #302

See merge request !210

The custom spinboxes ignore the wheel event, i.e. can not be changed with the mouse wheel.

This MR does not touch sliders. **Sliders can still be changed by scrolling** and spinboxes connected to sliders (i.e. translation of coordinate system) are changed as well, when the slider is changed by scrolling.

Error on number of points for PnP depending on coplanarity

Closes #315

See merge request !211

* Different minimum number of points
  * coplanar: 4
  * not coplanar: 6
* Check coplanarity, use different thresholds and give according error message

Resolve "Empty lines in the height file"

Closes #322

See merge request !208

- Ignore empty lines in height file
- Ignore empty lines in markerID file

Add Ctrl+E Shortcut for trajectory export

Closes #269

See merge request !202

- Remove Ctrl+E Shortcut for video view export
- Make Shortcut Shift+T usable no matter which tab is selected

Resolve "Version in pet-File not always MAJOR.MINOR.PATCH"

Closes #321

See merge request !207

- add unit test to make sure, patch is given in future versions

Resolve "ext. model always enabled"

Closes #316

See merge request !205

Resolve "Allow two digit versions"

Closes #318

See merge request !206

Resolve "Fix warning on MSVC"

Closes #296

See merge request !194

- Preparation on a switch to MSVC on windows
  - Reason: Support for vcpkg, while MinGW is only community supported

Resolve "Tooltip chessboard properties"

Closes #303

See merge request !204

Resolve "Correct tab order"

Closes #299

See merge request !201

Use correct 0-based index when setting the marker ID

See merge request !198