Oscar Björkman e09d60d1d1
Use single config backup file when config.template is used (#3104)
Copy `config.js` to a single `config.js-old` file whenever a
`config.template` is present, instead of using `Date()` as a suffix.
Creating files with a timestamp suffix means that whenever Magic Mirror
is restarted or recreated a new file is written into the config
directory.

Benefits:
* Single backup file will avoid excessive writing of files
* Saves space and usage on SD cards.
* Makes the folder cleaner and easier to overview, compared to ending up
with something like this as time goes on:

![image](https://github.com/MichMich/MagicMirror/assets/17575446/9b66a99c-e760-471e-884c-9daa19689702)
2023-05-15 20:11:23 +02:00
..
2022-01-26 23:09:26 +01:00
2022-01-26 23:09:26 +01:00
2022-01-26 23:09:26 +01:00