Fix api_version check in the group importer code

I have forgotten to update one check for the api_version 1 in the code
responsible for the remote group import feature. This commit fixes that.

Signed-off-by: Konrad Reiche <konrad.reiche@fokus.fraunhofer.de>

README.rst

@@ -160,7 +160,7 @@ field. The currently supported configuration options are:
 *   default_groups: A list of groups to which the harvested datasets will be
     added to. The groups must exist. Note that you must use ids or names to
     define the groups according to the API version you defined (names for version
-    '1', ids for version '2').
+    1, ids for version 2).
 
 *   default_extras: A dictionary of key value pairs that will be added to extras
     of the harvested datasets. You can use the following replacement strings,

ckanext/harvest/harvesters/ckanharvester.py

@@ -280,7 +280,7 @@ class CKANHarvester(HarvesterBase):
                                 group.pop(key, None)
                             get_action('group_create')(context, group)
                             log.info('Group %s has been newly created' % group_name)
-                            if self.api_version == '1':
+                            if self.api_version == 1:
                                 validated_groups.append(group['name'])
                             else:
                                 validated_groups.append(group['id'])