make accession validation faster by not using the fuzzy search.
add draft of new cross detail page.
improve layout of progeny addition dialog.
Merge branch 'master' into topic/new_cross_page
improved cross detail page.
factor out js from new cross page, refactor.
add local copies of Venus and Mars symbols for cross detail page.
tweak progeny addition.
Merge branch 'master' into topic/new_cross_page
add a dialog for changing properties.
add save function (incomplete)
Merge branch 'master' into topic/new_cross_page
add properties editing widget.
Merge branch 'master' into topic/new_cross_page
tweak error message.
remove unused function.
Merge branch 'master' into topic/new_cross_page
Merge branch 'master' into topic/new_cross_page