- define separate gnupg homedir as gnupghome
- update file comments in ddportfolioservice/model/ddportfolio.ini and
ddportfolioservice/model/keyringanalyzer.py to reflect current
copyright years and project name
- keyringanalyzer.py:
- refactor to reduce function complexity
- fix PEP8 violations
- use gnupghome setting
- switch to SafeConfigParser