rename rising_sun

Posted under Tags

The bulk update request #13546 has been approved by @nonamethanks.

create alias rising_sun -> rising_sun_flag

this name looks like sunrise to anyone who doesnt regularly upload flags

i get that it isnt always a flag in the image, but this is what everyone else calls it, and its real ambiguous as it is

https://en.wikipedia.org/wiki/Rising_Sun_Flag and all of the references