Make the copy button switch light/dark theme (#3057)

Co-authored-by: Rasmus Karlsson <rasmus.karlsson@pajlada.com>

src/widgets/dialogs/UserInfoPopup.cpp

@@ -13,6 +13,7 @@
 #include "providers/twitch/api/Kraken.hpp"
 #include "singletons/Resources.hpp"
 #include "singletons/Settings.hpp"
+#include "singletons/Theme.hpp"
 #include "util/Clipboard.hpp"
 #include "util/Helpers.hpp"
 #include "util/LayoutCreator.hpp"
@@ -42,7 +43,7 @@ namespace {
     {
         auto label = box.emplace<Label>();
         auto button = box.emplace<Button>();
-        button->setPixmap(getResources().buttons.copyDark);
+        button->setPixmap(getApp()->themes->buttons.copy);
         button->setScaleIndependantSize(18, 18);
         button->setDim(Button::Dim::Lots);
         QObject::connect(