[feat] Suggest sitecode if not already set (#617)
[feat] Suggest sitecode if not already set (#617)

This will suggest a 4 character alpha-numeric string based off the
sitename.

Refs: https://help.hubzero.org/support/ticket/11700

anthonyfuentes/hubzero-cms,zooley/hubzero-cms,zooley/hubzero-cms,anthonyfuentes/hubzero-cms,zweidner/hubzero-cms,zweidner/hubzero-cms,zweidner/hubzero-cms,anthonyfuentes/hubzero-cms,anthonyfuentes/hubzero-cms,zooley/hubzero-cms,zweidner/hubzero-cms,zooley/hubzero-cms