getting linked lexical entry group info optimizations

IMPORTANT: requires 'alembic upgrade head' to work

alembic.ini

@@ -1,31 +1,31 @@
 [app:main]
-sqlalchemy.url = postgresql+psycopg2://postgres@localhost:5433/lingvodoc_v_2_0_tmp
+sqlalchemy.url = postgresql+psycopg2://postgres@/lingvodoc
 
 [alembic]
 script_location = alembic
-sqlalchemy.url = postgresql+psycopg2://postgres@localhost:5433/lingvodoc_v_2_0_tmp
+sqlalchemy.url = postgresql+psycopg2://postgres@/lingvodoc
 
 [loggers]
 keys = root,sqlalchemy,alembic
 
 [handlers]
-keys = console
+keys = console, filelog
 
 [formatters]
 keys = generic
 
 [logger_root]
-level = WARN
-handlers = console
+level = DEBUG
+handlers = console, filelog
 qualname =
 
 [logger_sqlalchemy]
-level = WARN
+level = DEBUG
 handlers =
 qualname = sqlalchemy.engine
 
 [logger_alembic]
-level = INFO
+level = DEBUG
 handlers =
 qualname = alembic
 
@@ -35,6 +35,11 @@ args = (sys.stderr,)
 level = NOTSET
 formatter = generic
 
+[handler_filelog]
+class = handlers.RotatingFileHandler
+args = ('alembic.log', 'a', 16777216, 8)
+level = NOTSET
+formatter = generic
+
 [formatter_generic]
-format = %(levelname)-5.5s [%(name)s] %(message)s
-datefmt = %H:%M:%S
+format = %(asctime)s %(levelname)-5.5s [%(name)s] %(message)s