1. 重构排行榜页面，支持显示e站200页排行榜，功能和画廊等页面靠齐，如跳页、高亮已关注标签
2. 修复跳页后先向前翻页再向后翻页时的bug
3. 修复重试下载图片时数据库重复插入数据的bug
4. 重构basePage，解耦提升复用性

1. Support more galleries in ranklist page(200 pages) and highlight favorited tags
2. Fix the bug when turn the page forward and then turn the page backward after jumping page
3. Fix the bug of repeated data insertion in the database when retrying to download pictures
4. Refactor BasePage, decoupling and enhance reusability