bugfix: web/.phpPgAdmin/.htaccess: : handlers: use `chain` to only run them when the RewriteRule they apply to is run

web/.phpPgAdmin/.htaccess: schema : handler: removed `env=subject:schema` because that has already been set

web/.phpPgAdmin/.htaccess: tables: added : suffix handler

bugfix: web/.phpPgAdmin/.htaccess: view : match: moved to right after `view=` because it only applies to views, not functions

web/.phpPgAdmin/.htaccess: schema: page: indicate by prefixing with : to avoid needing to explicitly list all possible pages

web/.phpPgAdmin/.htaccess: table: action: indicate by prefixing with : to avoid needing to explicitly list all possible actions

web/.phpPgAdmin/.htaccess: action redirect: only append ? if adding to the query string

web/.phpPgAdmin/.htaccess: view: default to displaying the columns rather than the definition

web/.phpPgAdmin/.htaccess: support viewing the columns of a view rather than the definition

web/.phpPgAdmin/.htaccess: RewriteRules: use overridable action var