NOISSUE Add back Legacy for migration purposes

application/CMakeLists.txt

@@ -131,6 +131,8 @@ SET(MULTIMC_SOURCES
 	pages/ScreenshotsPage.h
 	pages/OtherLogsPage.cpp
 	pages/OtherLogsPage.h
+	pages/LegacyUpgradePage.cpp
+	pages/LegacyUpgradePage.h
 	pages/WorldListPage.cpp
 	pages/WorldListPage.h
 
@@ -229,7 +231,7 @@ SET(MULTIMC_SOURCES
 
 ######## UIs ########
 SET(MULTIMC_UIS
-	# Option pages
+	# Instance pages
 	pages/VersionPage.ui
 	pages/ModFolderPage.ui
 	pages/LogPage.ui
@@ -237,6 +239,7 @@ SET(MULTIMC_UIS
 	pages/NotesPage.ui
 	pages/ScreenshotsPage.ui
 	pages/OtherLogsPage.ui
+	pages/LegacyUpgradePage.ui
 	pages/WorldListPage.ui
 
 	# Global settings pages