Corrections to navigation to related records.

Corrections to navigation to related records.

* src/main/java/org/glom/web/client/OnlineGlomService.java:
* src/main/java/org/glom/web/client/OnlineGlomServiceAsync.java:
* src/main/java/org/glom/web/server/OnlineGlomServiceImpl.java:
getRelatedListData(), getSortedRelatedListData)(), getRelatedListRowCount(),
getSuitableRecordToViewDetails(): Take a LayoutItemPortal instead of a
relationship name, because the relationship name is not necessarily unique
on the layout.
TOOD: This is inefficient, because it passes the whole list of
child field items back to the server, but it is more correct, and happens
to fix a bug with the primary key being lost after a few navigations.
There is probably a chance to make this more efficient anyway in some
more basic way.

* src/main/java/org/glom/web/client/activity/DetailsActivity.java
* src/main/java/org/glom/web/client/ui/details/RelatedListTable.jav
* src/main/java/org/glom/web/server/ConfiguredDocument.java
* src/main/java/org/glom/web/server/database/DBAccess.java
* src/main/java/org/glom/web/server/database/RelatedListDBAccess.java:
* src/main/java/org/glom/web/server/database/RelatedListNavigation.java:
Adapted.