Accession source types COPY and VARIANT

Accessions in GGCE do not have a parent relationship (unlike parent inventory), but genebanks commonly make copies of an accession and track it under a different accession number.

This ticket adds support for recording In-house copy and In-house variant accessions and establish a link to the source accession through PROGDOI (see #541 (closed)).

Add a new accession source types to CommunityCodeValues as:

public static final CodeValueDef ACCESSION_SOURCE_TYPE_COPY = new CodeValueDef(ACCESSION_SOURCE_TYPE, "COPY", "In-house copy", "Accession is a representative copy of an existing accession.");
public static final CodeValueDef ACCESSION_SOURCE_TYPE_VARIANT = new CodeValueDef(ACCESSION_SOURCE_TYPE, "VARIANT", "In-house variant", "Accession is a selective variant of an existing accession.");

Register default MCPD translations

Accession source types are used to determine the method of creation of this PGRFA when registering a DOI. Please add to application startup a one-time change that assigns the MCPD translation for accession source type code values as follows:

Source type code	MCPD translation	Description
COLLECTED	acqu	Collected
DEVELOPED	nodi	Developed
DONATED	acqu	Donated or transferred
COPY	ihcp	In-house copy
VARIANT	ihva	In-house variant