Added kok and kok@latin to LINGUAS: Konkani in Devanagari script and latin script translations.
Gnucash translation into Konkani in the Devanagari script.
Gnucash translation into Konkani, shown in Latin script.
Remove unused function yahoo-get-historical-quotes

This gets rid of the dependency on guile-www as well
Bug 728841 - XML backend does not always store KVP slots

add appropriate code for slot handling in the relevant subclasses

	modified:   src/backend/xml/gnc-address-xml-v2.c
	modified:   src/backend/xml/gnc-entry-xml-v2.c
	modified:   src/backend/xml/gnc-job-xml-v2.c
	modified:   src/backend/xml/gnc-order-xml-v2.c
	modified:   src/backend/xml/gnc-tax-table-xml-v2.c
Prevent older gnucash versions from opening a data file if previously unhandled kvps are used

Prior to gnucash 26.4 with kvps for address, entry, job and taxtable objects
were not handled properly (but not in use either).
This patch will prevent any older version of gnucash to open a data file if a newer
version has written any of the above kvps.

A follow up on bug 728841