added websocket transport for logdb client
fixed unnecessary socket closed logging bug
fixed araqne/logpresso.com#40. concise query list and filtering support, allow multi query id list for removeQuery, added removeAllQueries command
moved signature command to proper package
added elapsed time output
closed araqne/logpresso.com#42. support background query
removed unnessary query object find loop
fixed araqne/logpresso.com#61. fixed removeQuery() fail bug
dependency version modified.
fixed logstorage.flush to work
fix bug. closed #63
Merge branch 'master' into improved_tokenizer

Conflicts:
	araqne-logdb-client/src/main/java/org/araqne/logdb/client/LogDbClient.java
	araqne-logdb/src/test/java/org/araqne/logdb/query/parser/ExpressionParserTest.java