Remove connection timeout to web crawler api (due to introducing some http connection fail problem);refactor crawler log api;adjust file and output default macro path
Refactor log api for fitting to DataSourceEngine in styletrip_engine project, and add generateID method to generate hash value by giving the current time
Refactor crawler log api, change some output default paths
Merge branch 'master' into develop/webcrawler-api
Refactor WebCrawler, SearchEngineCrawler to handle HTTP 503 status, Fix Output getter printer to print DECLARED method value
Fix keyword encoding and HTTP 503 bugs in Google image searching API