fixed codecov report layout, disabled tests in front- & backend for testing - should fail

.codecov.yml

@@ -155,9 +155,15 @@ coverage:
   #  - "old_path::new_path"
 
 comment:
-  layout: header, diff, uncovered, reach, files, tree, changes, sunburst, flags
-  branches: *
+  # layout options are quite limited in v4.x - there have been way more options in v1.0
+  layout: reach, diff, flags, files # mostly old options: header, diff, uncovered, reach, files, tree, changes, sunburst, flags
   behavior: new # default = posts once then update, posts new if delete
                 # once = post once then updates
                 # new = delete old, post new
-                # spammy = post new
+                # spammy = post new
+  require_changes: false  # if true: only post the comment if coverage changes
+  require_base: no        # [yes :: must have a base report to post]
+  require_head: no        # [yes :: must have a head report to post]
+  branches: null          # branch names that can post comment
+  flags: null
+  paths: null