suggestion for DHT refresh
fix saving of dht item
now it works
fix logic
wait 1 minute before start refreshing
limit refreshes per tick to refresh_per_tick_limit=20, fix boost::ref(item)
check for empty response
prevent flow of unconfirmed requests after twister start
update refresh time on confirm
simpler expression for random diffusion
confirmation for local items only
fix store/load confirmed field
remove refresh_per_tick_limit based logic in flavour of 100ms delay
less aggresive dht refresh
Merge branch 'master' of git://github.com/miguelfreitas/twister-core into dht_refresh_1

Conflicts:
	libtorrent/include/libtorrent/ptime.hpp
unify style
Merge pull request #235 from dryabov/dht_refresh_1

faster DHT refresh 2