EasyViewer-epub,Comic,Text,PDF

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- Fix epub image list window bugs (Thanks to rara)
- Fix recent documents setting (Thanks to witchcali)
- Fix file list color display
- Improved file info panel (Thanks to witchcali)
Show file info in all tabs
- Fix file cache bug (Thanks to Seungmin Lee)
Fix errors related to file I/O operations
- Fix settings UI (Thanks to rara)
- Bug fixes

* Change log
- Fix memory manager
- Opening text files is faster
- Fix epub table of contents (Thanks to 강현민)
- Add [Send to…] menu