V0.6.4-ls25

LinuxServer Changes:

Add docker mod to enable optional ebook conversion on x86-64. Add unrar.
calibre-web Changes:

New features:

• Optional parsing of comic metadata

Bug Fixes:

• Custom columns now visible in Caliblur! theme
• Fix for restart of newer versions of tornado server
• Fix for updater on beta versions
• Improved parsing of metadata downloads
• Calibur! background images are available again
• Search for username and email address is now case insensitive
• Sorting in comics follows natural sorting rules
• Fix for displaying long running tasks
• Added error output for calibre during conversion
• Deleting the last admin user is now prevented
• User ids are unique (even for deleted users)
• Updated Comicreader
• Updated translations