Added inputs/VegBIEN/fs symlink to /servers/vegbiendev/fs

Added web/.gbif shortcut to datasources/GBIF

web/**/.htaccess: Use [qsappend] flag with all RewriteRules to ensure that the original query string is never lost

inputs/VegBank/.htaccess: Added RewriteCond to check that the REQUEST_FILENAME is not an existing dir, which is apparently needed to prevent the verify/ subdir from being interpreted as a redirect

web/**/.htaccess: Removed preprocessing commands that need to run for every dir, because these are now inherited from the outermost .htaccess using InheritBefore. This allows the inner .htaccess files to focus just on the fallback rewrites, without needing lots of boilerplate code (except for the obligatory RewriteEngine/RewriteOptions/SetEnvIf preamble).

web/.htaccess: handle DirectoryIndex subrequests when there is no DirectoryIndex, by deleting the /index filename. This ensures that any fallback redirect is not invoked, and instead the action corresponding to a trailing / (usually the display of a directory listing) is performed.

web/**/.htaccess: Use InheritBefore RewriteOption so that the outermost dir's rules are always run first. This is necessary so that all the HTTP_HOST and dotpath handlers, etc. are applied before any fallback handlers, without needing to copy and paste each rule into every .htaccess file. (Note that the InheritBefore RewriteOption is only available in Apache 2.4.) The outermost .htaccess file, however, must not use InheritBefore because this would inherit rules from the global Apache config, which normally should not be run and which cause an infinite redirect loop.

web/**/.htaccess: fallback rules which should not be inherited by subdirs: Filter using a RewriteCond on %{ENV:innermost_dir} so that the rule is only run if the innermost dir was this dir. (This is needed when using InheritBefore.)

web/**/.htaccess: Added SetEnvIf directives to set the $innermost_dir env var, which is used by InheritBefore RewriteRule inheritance. You can easily populate the current dir name in jEdit by right-clicking the buffer tab and selecting Insert File Path (which requires the BufferTabs plugin), and then picking out the dir right before the .htaccess. If multiple dirs in the dir path have the same name (e.g. a/b/a/), add a distinguishing prefix to the inner dirs (this is rare).

web/.htaccess: Support rules being inherited by subdirs using InheritBefore, by setting an env var $innermost_dir that stores the name of the innermost subdir to contain an .htaccess file. This env var can then be tested for in a RewriteCond in rules that should only apply locally. This works because SetEnvIf processes directives from the outer dir to the inner dir, so that the inner dir's setting comes last and is the final value of $innermost_dir. Note that you must use SetEnvIf rather than SetEnv because "The internal environment variables set by [SetEnv] are set after most early request processing directives are run, such as access control and URI-to-filename mapping. If the environment variable you're setting is meant as input into this early phase of processing such as the RewriteRule directive, you should instead set the environment variable with SetEnvIf." [emphasis added] (http://httpd.apache.org/docs/current/mod/mod_setenvif.html#setenvif)