__author__ = "Alfonso Tierno, Leonardo Mirabal"
__date__ = "$06-Feb-2017 12:07:15$"
-__version__ = "0.5.22-r538"
-version_date = "Nov 2017"
+__version__ = "0.5.23-r539"
+version_date = "Jan 2018"
database_version = 22 #needed database schema version
HTTP_Bad_Request = 400