Update: models now follow PEP, add connection func, example app for show all vm6 users

isp_maintenance/db/vm6/databases.py

@@ -0,0 +1,8 @@
+from db.connection import guess_database
+
+
+# The variable will contain an object of
+# the MySQLDatabase or PostgresqlDatabase class as well as all connection data
+# If in the future there will be more databases in the platform,
+# they should be added here
+isp_database = guess_database('isp')