Added In-App Update Prompt feature. Whenever a new update is released in the Play Store, will be displayed. If the "Update" button is clicked, it will start to update the app, and if "Don't show again" button is clicked, the Prompt won't show up until the next update is released on the Play Store.
Fixes: #901.
Description:
Added In-App Update Prompt feature. Whenever a new update is released in the Play Store, will be displayed. If the "Update" button is clicked, it will start to update the app, and if "Don't show again" button is clicked, the Prompt won't show up until the next update is released on the Play Store.