XF2 Style [ShikiSuen] CSCN Anniversary theme (Free Standalone Version) 2.2.12a

Manually updated for XenForo 2.2.12, fixing some artifacts generated by "template auto-merge".

Disclaimer: My XenForo license is expired, but we do have official free access to XenForo demo sites (which has time limits). I finished the theme update procedures by using an XF official demo site.