Update A-C version, add synced tabs empty state

app/src/main/java/org/mozilla/fenix/sync/SyncedTabsLayout.kt

@@ -39,6 +39,7 @@ class SyncedTabsLayout @JvmOverloads constructor(
             SyncedTabsView.ErrorType.SYNC_ENGINE_UNAVAILABLE -> R.string.synced_tabs_enable_tab_syncing
             SyncedTabsView.ErrorType.SYNC_UNAVAILABLE -> R.string.synced_tabs_connect_to_sync_account
             SyncedTabsView.ErrorType.SYNC_NEEDS_REAUTHENTICATION -> R.string.synced_tabs_reauth
+            SyncedTabsView.ErrorType.NO_TABS_AVAILABLE -> R.string.synced_tabs_no_tabs
         }
 
         sync_tabs_status.text = context.getText(stringResId)

buildSrc/src/main/java/AndroidComponents.kt

@@ -3,5 +3,5 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 object AndroidComponents {
-    const val VERSION = "47.0.20200618130101"
+    const val VERSION = "47.0.20200622130109"
 }