LICENSE: Update year to 2017

🎉 Happy New Year 🎉

LICENSE

 The MIT License (MIT)
 
-Copyright (c) 2014-2016 syuilo
+Copyright (c) 2014-2017 syuilo
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

src/web/app/common/tags/copyright.tag

 mk-copyright
-	span (c) syuilo 2014-2016
+	span (c) syuilo 2014-2017
 
 style.
 	display block