Sync: added empty files and protobuf copied files
Test: moved test-chrono-chat to node; Sync: empty files and copied files from protobuf added
Merge remote-tracking branch 'upstream/master' into chrono-sync2013
digest-tree:initial implementation skeleton
digest-tree: implementation except sha256
ChronoSync2013: Add skeleton functions
ChronoSync2013: Add skeleton functions
Merge remote-tracking branch 'upstream/master' into chrono-sync2013
chrono-sync2013: added protobuf files and basic implementation; not yet tested
Merge remote-tracking branch 'upstream/master' into chrono-sync2013
chrono-sync2013: skeleton implementations
chrono-sync2013: typos fixed
test: browser chrono-chat test skeleton added
test: chrono-chat-class implementation; not yet tested
chrono-sync2013: typo fixing
Merge remote-tracking branch 'upstream/master' into chrono-sync2013
test-chrono-chat: switched to node.js
test-chrono-sync: initial timeout situation tested
chrono-sync2013: using memory content caches
chrono-sync2013: removed declaration of inner SyncState