JSDOC updates

src/sbbs3/js_bbs.cpp

src/sbbs3/js_file_area.c

src/sbbs3/js_global.c

src/sbbs3/js_msg_area.c

src/sbbs3/js_msgbase.c

src/sbbs3/js_user.c

src/sbbs3/js_xtrn_area.c