Add a tooltip to the Copy URL button

We aren't doing the hovercard in the design right now, so this is fine

components/Header/index.tsx

@@ -216,6 +216,7 @@ const Header = () => {
     }
 
     return title !== '' ? (
+      <Tooltip content={t('tooltips.copy_url')}>
         <Button
           blended={true}
           rightAccessoryIcon={
@@ -226,6 +227,7 @@ const Header = () => {
           text={title}
           onClick={copyToClipboard}
         />
+      </Tooltip>
     ) : (
       ''
     )

public/locales/en/common.json

@@ -404,6 +404,7 @@
     "remix": "Remixed"
   },
   "tooltips": {
+    "copy_url": "Copy the URL to this team",
     "remix": "Make a copy of this team",
     "save": "Save this team to your account",
     "source": "Go to original team"

public/locales/ja/common.json

@@ -405,7 +405,7 @@
     "remix": "リミックスされた"
   },
   "tooltips": {
-    "remix": "この編成をコピーする",
+    "copy_url": "この編成のURLをコピーする",
     "save": "この編成をアカウントに保存する",
     "source": "オリジナルの編成へ"
   },