Merge branch '147-improve-lepiforum-label-references' into 'master'

Resolve "improve lepiforum label references"

Closes #147

See merge request troebs/pycs!136

labels/lepiforum_version_7/Provider.py

@@ -49,7 +49,7 @@ class Provider(LabelProvider):
             # add hierarchy
             for level, level_name in hierarchy_levels:
                 if entry[level] is not None:
-                    reference, name = entry[level].lower(), entry[level]
+                    reference, name = f'{level}_{entry[level].lower()}', entry[level]
                     result.append(self.create_label(reference, name, parent_reference, level_name))
 
                     parent_reference = reference
@@ -60,7 +60,7 @@ class Provider(LabelProvider):
                 reference = entry['kr_number']
             else:
                 name = f'{entry["genus"]} {entry["species"]}'
-                reference = name.lower()
+                reference = f'_{name.lower()}'
 
             result.append(self.create_label(reference, name, parent_reference))