removed no longer needed web/dotpath.php. use web/.htaccess's parse-dotpath RewriteRule instead.

web/.htaccess: parse dotpath in query string: moved parsing from dotpath.php to RewriteRules. with the eventual addition of config env vars, this makes it possible for subdirs to configure their own dotpath parsing, rather than having all levels of the dotpath translated to a URL path. (for inner levels, it may el.g. be more appropriate to parse the dotpath as query params or pass it along to an external URL.) note that it takes only two lines of mod_rewrite (plus a workaround RewriteRule) to replace over a dozen lines of PHP code.

web/.htaccess: renamed REQUEST_URI_no_/ to REQUEST_URI_no_extra_/ to clarify that only an excess / is removed

web/.htaccess: moved set REQUEST_URI_no_/ under translate subdomain to path because it needs to be set right before being used to be accurate

web/.htaccess: setting REQUEST_URI_no_/: use one RewriteCond instead of two since the regexps can be combined

web/.htaccess: parse dotpath in query string: removed dotpath auto-detection code because this is now handled by a separate RewriteRule

web/.htaccess: auto-detect dotpath in query string (having a . before any = ) and mark it using a leading . . this is done as a separate step so that the dotpath is already explicitly marked as such when it's parsed.

web/dotpath.php: just match the QUERY_STRING directly, excluding &, instead of splitting apart the QUERY_STRING and then matching the dotpath portion. this allows the resulting regexp to be used directly in a .htaccess file.

web/.htaccess: prepend dir name if it's part of the filename: support MultiViews filenames without the extension, by using a lookahead request -F instead of a regular -f

schemas/VegCore/.htaccess: added RewriteBase to support relative redirects. this enables auto-prepending dir name if it's part of the filename, e.g. VegCore/ERD.pdf -> VegCore/VegCore.ERD.pdf).