Fix #55 Send password after UI processing

app/src/main/java/info/knacki/pass/input/InputService.java

@@ -137,7 +137,7 @@ public class InputService extends InputMethodService implements PasswordClickLis
         FileInterfaceFactory.GetFileInterface(this, PasswordPickerFactory.GetPasswordPicker(this, fInputView), f).ReadFile(new OnResponseListener<String>() {
             @Override
             public void OnResponse(String passwordContent) {
-                sendPassword(passwordContent);
+                new android.os.Handler(getMainLooper()).post(() -> sendPassword(passwordContent));
             }
 
             @Override