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Use ConfigObj for config files; rename loris.conf to loris2.conf. Closes #63, closes #105
Merge pull request #107 from pulibrary/config_w_configobj

Use ConfigObj for config files; rename loris.conf to loris2.conf
Add a note about why failures may happen here. Error gets logged, but feedback from unittest.TestCase buries it.
Add option to make identifier/ redirect to info.json (in addition to identfier w/o trailing '/'). Closes #94.