w3id updates needed for v2.3

[coolharsh55]

This issue collects changes needed to w3id for the v2.3 update

• add 2.3
• make 2.3 the latest/default version
• redirect standards/p7012 to standards/ieee/7012 Change P7012 to IEEE 7012 #423
• add legal/de/gdng
• check and add /dpv/modules for docs
• add /dpv/modules Incorrect latest published version IRI for modules #417
• add /dpv/search