add caching of shortened URIs after fetching
add caching of shortened URIs after fetching

xeddmc/twister-html,slr/twister-html,miguelfreitas/twister-html,majestrate/twister-html,xeddmc/twister-html,miguelfreitas/twister-html,myleneb/twister-html,slr/twister-html,majestrate/twister-html,myleneb/twister-html