Maintenance mode from CONFIG file

[MiCKov3r]

Hi, I made a small fix in the code, in case someone wants to do maintenance on the live environment and needs to disable login/editing. The setting is done via the CONFIG file, so it doesn't need to change the localization.

CONFIG.PHP

return [
'maintenance' => 'Oops! Under maintenance.'
];

This setting is checked

• when logging in, it just hides the login window
• when checking the role, function isAllowed
• displaying a 401 error, where information about system maintenance is added

What do you think about it?
Resolves #206

[MiCKov3r]

It occurred to me that I tested this solution for my implementation when I call COCKPIT from PHP.
I'll do some more tests when calling via API :)

[MiCKov3r]

MAINTENANCE mode now accepts READ permissions and the ADMIN role still has full access