Merge branch 'rm-group-flag' into 'master'

Revert "Groups feature flag"

See merge request !1167

arkindex/project/config.py

@@ -128,7 +128,6 @@ def get_settings_parser(base_dir):
     features_parser.add_option('search', type=bool, default=True)
     features_parser.add_option('transkribus', type=bool, default=True)
     features_parser.add_option('workers', type=bool, default=False)
-    features_parser.add_option('groups', type=bool, default=False)
 
     cache_parser = ConfigParser()
     cache_parser.add_option('type', type=CacheType, default=None)

arkindex/project/tests/config_samples/defaults.yaml

@@ -29,7 +29,6 @@ elasticsearch:
   - localhost
 email: null
 features:
-  groups: false
   search: true
   selection: true
   signup: true

arkindex/project/tests/config_samples/override.yaml

@@ -43,7 +43,6 @@ email:
   port: 25
   user: teklia@wanadoo.fr
 features:
-  groups: true
   search: false
   selection: false
   signup: false