[GRASS-git] [OSGeo/grass-addons] fcc0f2: r.confusionmatrix: fix omission in matrix (#277)

[AnikaBettge]

  Branch: refs/heads/master
  Home:   https://github.com/OSGeo/grass-addons
  Commit: fcc0f27cdc245e5f2383a0536a171d8252cd2577
      https://github.com/OSGeo/grass-addons/commit/fcc0f27cdc245e5f2383a0536a171d8252cd2577
  Author: AnikaBettge <37300249+AnikaBettge at users.noreply.github.com>
  Date:   2020-09-16 (Wed, 16 Sep 2020)

  Changed paths:
    M grass7/raster/r.confusionmatrix/r.confusionmatrix.py
    A grass7/raster/r.confusionmatrix/testsuite/data/confusionmatrix_raster_matrix.csv
    A grass7/raster/r.confusionmatrix/testsuite/test_r_confusionmatrix.py

  Log Message:
  -----------
  r.confusionmatrix: fix omission in matrix (#277)

* fix omission in matrix
* cleanup
* test for raster reference
* remove warning

Co-authored-by: Markus Neteler <neteler at gmail.com>