typos
travis: code-checker checks whole repository
Response::redirect() link is printed only for https? protocols [Closes nette/http#24]
UserPanel: is rendered when headers are not sent or session is active
MemcachedStorage: the key must not include control characters or whitespace [Closes nette/caching#13]

https://github.com/memcached/memcached/blob/master/doc/protocol.txt#L41
FileJournal: fixed 'Link is not in node' exception [Closes nette/caching#12]

That bug occur only in debug mode
Html: floats in attributes are printed in natural notation [Closes nette/forms#50]
Json: workaroud for PHP fatal error caused by \u0000 at the beginning of key
improved phpDoc