The `remote` module is deprecated and `@electron/remote` is unnecessary,
since the `ipcMain` and `ipcRenderer` can replace their functionality,
providing better performance and better security.
All other dangerous calls (mainly pulling main process constructs into
the renderer process) have also been removed.
Closes: #1205
* Added "Follow System" option to
`Settings -> General Settings -> Locale Preference`
and set it to default
* Changed double quotes to single quotes
* Removed unnecessary comment
* Changed `app` accessing method
* Cleaned up if/else statements
* Checks similar locales as fallback
* Changed label to "System Language"
* Changed locale filtering logic to use the filter() method