POM: simplify repositories blocks
POM: use GitHub username for developer ID
POM: use more specific CI URL
POM: fix erroneous license block
POM: clarify project description

Saying "all Open Microscopy Environment formats" could be misconstrued
as including all formats supported by Bio-Formats, even PFFs -- whereas
what this project actually provides is support for the OME-XML data
model, and the OME-XML and OME-TIFF file formats.
POM: remove no-longer-needed configuration blocks

The removed sections have all migrated to the pom-scijava parent.
POM: use new bsd_2 license, not custom resolver

The license-maven-plugin 1.6 adds BSD-style license templates:
https://jira.codehaus.org/browse/MLICENSE-80

With this fabulous new addition, we can eliminate our custom
license resolver in favor of the stock bsd_2 license.