Merge pull request #192 from b3log/master

c
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timeline 皮肤移至 b3log-solo-skins
原始评论 id、name 可空（本地版）
fixed 194 & fied 195
init a htmlstatic plugin for test
remove
Fixed #196

Latke 框架在清空缓存前将触发一个清空缓存事件，监听这个事件把统计从缓存中写入数据存储中。
Fixed #193

@oncereply 修复了。
修改 MySQL 版默认数据库连接池为 c3p0
#202

还需要在升级程序中添加 Preference 列。
使用 POST同步评论到社区
Fixed #205
m2e 导入问题
BAE 版去除 H2 依赖。
keep lang properties be consistent, every line
Add a feature, by which user can find their lost password by registered email. see issue #200
Forgotten commits for latest commit
cope with sending email issue with reset password feature and refactoring code
Fixed #210