Put the Item's persistent identifiers into the DRI document.
Add Altmetric.com badging
fix display: declare the confman namespace used here
Rename module configuration to be a little less generic
Switch to direct use of dc.identifier.uri metadata
Make identifier metadata field name configurable
Add PlumX
Merge pull request #685 from mwoodiupui/DS-1222

[DS-1222] Alternative Metrics - Framework, Integration of AltMetric and PlumX