Stop PlayerService when logging out.

app/src/main/java/com/github/apognu/otter/activities/MainActivity.kt

@@ -182,6 +182,7 @@ class MainActivity : AppCompatActivity() {
       Intent(this, LoginActivity::class.java).apply {
         flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK or Intent.FLAG_ACTIVITY_CLEAR_TOP
 
+        stopService(Intent(this@MainActivity, PlayerService::class.java))
         startActivity(this)
         finish()
       }