Settings Not Properly Applied when Opening Project

[5hir0kur0]

I think some settings are used for the initialization of global variables and those are not updated when a new project with different settings is loaded.
E.g.

• I think that the log level set for the project is ignored when the project is opened from the "Project" > "Open Project" menu.
• The list of syntax themes is not updated either.

[5hir0kur0]

We already have CLASSES_WITH_SETTINGS. Maybe it would make sense to require those to implement an interface Updateable or similar so that their state can be reloaded once the settings change (e.g. when opening a project).