now can fetch likes of a mblog; content can include [emotion]
fix parameters issues when get users weibo
Revert "fix parameters issues when get users weibo"

This reverts commit c117a803af0f376e7ad4eb63d1756eb2c841c932.
fix #1:parameters issue when get users' weibo
fix bug caused by datetime parse used in contrib/weibo parsers
fix bugs; add shard key support for contrib/weibo
urgent bug fix
urgent bug fixes
fix bugs
add retry mechanism for weibo crawling
add retry mechanism for rpc call
add ignore to rpc call in master watcher and loader
fix for weibo.com new changes
continue fix for weibo new changes
add lxml parser for bs4; add retry mechanism to friend fetch in weibo
change weibo storage: use single collection to store weibos
adjust some parameters
start to reconstruction; fix bugs in weibo friends collections
revert some operations of last commit
fix contrib/weibo bug: when follows page is less than 10, the fans page will not be fetched