Revert "Navbar-License issue resolved" (#779)

Author: mariobehling

index.html

@@ -195,7 +195,7 @@
 
 						<div class="copy-text-box">
 							<div class="copy-text-bottom">
-								<span>© Copyright 2009-2020 Creative Commons By License, FOSSASIA</span>
+								<span>© Copyright 2009-2019 Creative Commons By License, FOSSASIA</span>
 							</div>
 						</div>
 					</div>