Fix of Night theme handling

[thubalek]

Closed #32

There was incorrect handling of Day/Night theme in the app. Root cause was calling superDelegate.attachBaseContext2() in method androidx.appcompat.app.LocaleHelperAppCompatDelegate#attachBaseContext2

[tgvoskuilen]

I tried this fix out in several different API levels and it doesn't seem to work properly. Before the fix, none of the app colors would change when the system dark/light mode changed. With this change, some of the app changes, but other parts like the toolbar and CardViews stay with the old color theme (which honestly looks worse than just having nothing change at all).

My "fix" for this so far has been to add a switch in Application::attachBaseContext so that dark/light auto-switching is only broken for those who have actually selected a non-default language setting at least.

override fun attachBaseContext(base: Context) {
    if( LocaleHelper.hasLocaleSelection(base)) {
        super.attachBaseContext(localeAppDelegate.attachBaseContext(base))
    }
    else {
        super.attachBaseContext(base)
    }
}