1. 修复阅读方向为从右至左时，点击翻页方向错误的bug
2. 修复无法下载名称中含有.的画廊的bug
3. 修复里站环境下无法下载原图的bug
4. 超出图片配额509时不缓存页面

1. Fix bug with turning page in right to left read direction
2. Fix bug with downloading gallery whose title has character '.'
3. Fix bug with downloading original image in EX site
4. Not cache page when exceed image limits