Dark Mode cookie not saved past current session.

[Github-Citizen]

Dark mode does not retain the cookie past the current session. If you close the browser and reopen roundcube it is reset back to light mode.

Tested in Firefox and Edge.

[Github-Citizen]

If i can add a feature request to this if it isn't too difficult...
How about a dark/light mode button on the login screen?

[Github-Citizen]

If anyone wants a quick fix to this until its available in a future update.
In file ./skins/elastic/ui.min.js

# Find
rcmail.set_cookie("colorMode",b)

# Change To
rcmail.set_cookie("colorMode",b,new Date(Date.now()+365*24*60*60*1000))

[alecpl]

Fixed.