• Cleanup MangaPlus stuff, only keep what SY uses (@jobobby04)
• Fix reader slider not doing anything (@jobobby04)
• Fix vertical slider (@jobobby04)
• Fix extra padding if there is no namespace (@jobobby04)
• Add some padding to the continue reading button if the lang badge is enabled (@jobobby04)
• Fix MangaPlus errors (@jobobby04)
• Launch the download warning toast in the UI thread (@jobobby04)