Fix followup sync again

jellyfin_kodi/full_sync.py

@@ -68,7 +68,7 @@ class FullSync(object):
 
         return self
 
-    def libraries(self, library_id=None, update=False):
+    def libraries(self, libraries=None, update=False):
 
         ''' Map the syncing process and start the sync. Ensure only one sync is running.
         '''
@@ -76,8 +76,10 @@ class FullSync(object):
         self.update_library = update
         self.sync = get_sync()
 
-        if library_id:
-
+        if libraries:
+            # Can be a single ID or a comma separated list
+            libraries = libraries.split(',')
+            for library_id in libraries:
                 # Look up library in local Jellyfin database
                 library = self.get_library(library_id)