schemas/VegBIEN/VegBIEN data dictionary.xlsx: updated: added tab to store viewFullOccurrence->analytical_stem_view mapping

schemas/VegBIEN/VegBIEN data dictionary.xlsx: updated: added viewFullOccurrence column

bugfix: web/index.php: fixed bug where full directory index would not display correctly if invoked as /index.php instead of / (caused by incorrect URL)

schemas/VegBIEN/VegBIEN data dictionary.xlsx: updated: added links to editable and clickable versions of the spreadsheet, to enable switching back and forth between them. populated more definitions and links.

web/username_prefix.php: word-wraps: renamed to linewraps

web/username_prefix.php: added support for word-wraps of the form x_-_.y@url -> x.y@url (the _ are needed to work in Google spreadsheets)

bugfix: web/username_prefix.php: comments: need to use syntax that doesn't use : because Firefox will not update the "password" for the website with the new value after the : . the new syntax use () instead.

web/username_prefix.php: comment prefixes: support embedded ":" in comment

schemas/VegBIEN/VegBIEN data dictionary.xlsx: updated: populated some definitions from VegCore data dictionary where available

bugfix: schemas/VegBIEN/VegBIEN data dictionary.xlsx: updated: restored "" that had been stripped out when the data was copied out and pasted back, due to a bug in Google spreadsheets. prepended : before initial " as a workaround to prevent the " getting stripped out again.