Silenced warnings for IDs not specified by specifying them

Created by: stefanoborini

Specifies the ids for the plugins. Envisage requires them to be defined, or it will issue a warning that it is using a generated id. It is good practice that we do define them, so a new function has been introduced to create them.

force_bdss/ids.py

@@ -37,6 +37,9 @@ def mco_parameter_id(producer, identifier):
 
 
 def plugin_id(producer, identifier):
+    """Creates an ID for the plugins. These must be defined, otherwise 
+    the envisage system will complain (but not break)
+    """
     return _string_id("plugin", producer, identifier)