M700 and M24

BUR #3980 has been approved by @evazion.

create alias m700 -> remington_model_700
create alias r700 -> remington_model_700
create alias m24a2 -> remington_model_700
rename m24 -> remington_model_700
create alias m24_sws -> remington_model_700

M700, R700, M24, M24a2 are basiaclly the same model, easier for people to search if they're into guns i guess

EDIT: The bulk update request #3980 (forum #176231) has been approved by @evazion.

Is there any chance that someone might try to use the m24 tag for the m24_chaffee? Or any of the other historical military vehicles with the M24 designation? If so, perhaps this tag should be used for disambiguation rather than an alias.

Changed it to a rename and added a M24 SWS alias for autocomplete purposes.

The bulk update request #3980 (forum #176231) has been approved by @evazion.