Updates to the geography schema

[davidamichelson]

See #3

[wlpotter]

@dlschwartz I've compiled a list of the remaining schema changes we would like

• allow @subtype="representative" on tei:location elements (full xpath: /TEI/text/body/listPlace/place/location). See Add @subtype="representative" to the manual #3
• the @resp attribute, which is now allowed on both tei:placeName and tei:location elements, should allow the attribute value to be the string "https://bqgazetteer.bethmardutho.org". For tei:location elements, this seems to be true. However, on tei:placeName elements, @resp="https://bqgazetteer.bethmardutho.org" is invalid (the schema expects only the string "http://syriaca.org")
• The schema says that tei:principal is 'not allowed anywhere'. We would like to include this in the tei:titleStmt (full xpath: /TEI/teiHeader/fileDesc/titleStmt/principal). This element follows the tei:funder and precedes the tei:editor elements.
• The schema expects a tei:seriesStmt, which the BQG records will not have.

Please let me know if any of the above is unclear. Thanks much!

[dlschwartz]

@wlpotter @davidamichelson A quick initial test suggests that this commit resolves the changes requested here. Can you please test this a bit more widely and let me know if you need any additional changes. You can close the issue when you're satisfied.

[wlpotter]

@dlschwartz I checked a couple more records, and this looks to be fixed. Thanks!

[wlpotter]

Reopening to remind myself to break these out into "everywhere" and "bqg-specific" changes and making separate issues for each.

[wlpotter]

These have been split out into
#74 #75 #76 and #77