chore: Change copyright year to 2020

frontend/components/MainFooter.vue

@@ -54,7 +54,7 @@
 					</router-link>
 				</p>
 				<p>
-					© Copyright Musare 2015 - 2019
+					© Copyright Musare 2015 - 2020
 				</p>
 			</div>
 		</div>

frontend/dist/index.tpl.html

@@ -8,7 +8,7 @@
 	<meta name='viewport' content='width=device-width, initial-scale=1, user-scalable=no'>
 	<meta name='keywords' content='music, musare, listen, station, station, radio, edm, chill, community, official, rooms, room, party, good, mus, pop'>
 	<meta name='description' content='On Musare you can listen to lots of different songs, playing 24/7 in our official stations and in user-made community stations!'>
-	<meta name='copyright' content='© Copyright Musare 2015-2019 All Right Reserved'>
+	<meta name='copyright' content='© Copyright Musare 2015-2020 All Right Reserved'>
 
 	<link rel='apple-touch-icon' sizes='57x57' href='/assets/favicon/apple-touch-icon-57x57.png?v=06042016'>
 	<link rel='apple-touch-icon' sizes='60x60' href='/assets/favicon/apple-touch-icon-60x60.png?v=06042016'>