====== SortImages ======
To sort all images in the input stack according to a selected header parameter, this logic can be used.

===== Parameters and I/O =====

|< 100% 30% >|
^ Parameters             ^ Description     ^
| Header key to use      | List of available header keyes to sort by (full list, see below). By selecting "customHeaderKey", the user can specify a custom key that will be used for sorting. |
| -> Custom header key   | State a key, that shall be used for sorting. |
| Ascending sorting      | If checked, the stack of images will be sorted in ascending order. If not, it will be sorted in descending order. |

Available header keys to use for sorting:

  * imageID
  * cccPeakHeight
  * clusterMember
  * classSize
  * numImagesInSum
  * referemceData
  * classID
  * customHeaderkey
    * Custom header key