#153 agn.py should read db settings from conf/context.xml

[Whissi]

Like described in this forum posting, the agn Python module still tries to read database settings from webapps/openemm/WEB-INF/classes/{emm,cms}.properties instead of the new conf/context.xml location. Please see the attached patch which will make agn module to read settings from conf/context.xml.

I also moved the location of the class below logging class so that I can use logging in _Properties class.