dia.Paper: remove border from default theme (#387)
dia.Paper: remove border from default theme (#387)


vtalas/joint,chill117/joint,gagaboy/joint,kumilingus/joint,gagaboy/joint,DavidDurman/joint,chill117/joint,kumilingus/joint,kumilingus/joint,chill117/joint,gagaboy/joint,vtalas/joint,clientIO/joint,clientIO/joint,DavidDurman/joint,clientIO/joint,clientIO/joint,vtalas/joint,kumilingus/joint,DavidDurman/joint