Update norms for citation and bibliographiccitation formats

[tucotuco]

The VertNet portal now standardizes the citation and bibliographiccitation formats for all records, using the added information for doi and pubdate. Consider updating the VertNet norms to make the recommendation match.

See #593.

[tucotuco]

New citation format:
[orgname]. [dataset title]. Dataset DOI: [data set doi]. Source: [source URL](source published on [source published date]; accessed from VertNet on [today in YYYY-MM-DD format])

Example:
Academy of Natural Sciences of Philadelphia. ANSP Mammalogy. Source: http://phylo.ansp.org:8080/ipt/resource.do?r=ansp_mam (source published on 2014-11-10)

New bibliographicCitation format:
[orgname]. [dataset title]. Dataset DOI: [data set doi]. Record ID: [occurrenceID]. Source: [source URL](source published on [source published date]; accessed from VertNet on [today in YYYY-MM-DD format])

Example:
University of Colorado Museum of Natural History. UCM Birds. Record ID: http://arctos.database.museum/guid/UCM:Bird:4072?seid=2550376. Source: http://ipt.vertnet.org:8080/ipt/resource.do?r=ucm_birds (source published on 2014-02-05)