[Incubator] Recommend deegree for graduation

[Jody Garnett]

OSGeo Incubation committee,

The deegree community has completed the requirements for incubation.

The appropriate links are:
- http://wiki.osgeo.org/wiki/Deegree_Incubation_Status
- https://wiki.deegree.org/deegreeWiki/OSGeoIncubationCodeProvenanceReviewReport

The team has done an excellent job producing documentation that is
both clear and complete. It was a pleasure working with them
throughout the incubation process.

Jody