Added missing empty directories from svn import

interface/cache/empty.dir

interface/lib/classes/idn/empty.dir

interface/ssl/empty.dir

interface/tools/empty.dir

interface/web/dashboard/form/empty.dir

interface/web/dashboard/list/empty.dir

interface/web/designer/form/empty.dir

interface/web/designer/list/empty.dir

interface/web/js/js.d/empty.dir

interface/web/monitor/form/empty.dir

interface/web/sites/aps_meta_packages/empty.dir

interface/web/temp/empty.dir

interface/web/tools/list/empty.dir

server/aps_packages/empty.dir

server/conf-custom/empty.dir

server/conf-custom/error/empty.dir

server/conf-custom/index/empty.dir

server/conf-custom/install/empty.dir

server/conf-custom/mail/empty.dir

server/mods-core/empty.dir