How to upgrade Elimity Insights

The release notes always contain detailed steps for that specific upgrade. 

In general, the steps are:

1. Create a backup of your database.
2. Create a backup of your files.
3. Download the latest release of Elimity Insights. This is described in more detail in this article. 
4. Shut down Elimity Insights.
5. Copy and replace the necessary executables for your operating system.
6. For every language-specific subdirectory of `frontend/`, delete all contents apart from the `customer/` folder.
7. Copy the contents of every needed language-specific subdirectory from the release to your deployment apart from the `customer/` folder.
8. Apply the database migrations by running `elimity-database-migrate`.
9. Apply the config file migrations listed in the release notes.
10. Start up the server again.