Properly supporting SIGINT in lgweb
Properly supporting SIGINT in lgweb

For some reason this didn't always work (can signals be sent from
within signal handlers? I'm not sure), but this is clearly working well
in a local test, and is neater anyway.

Signed-off-by: Rodrigo Tobar <bd955c861cbec2e41c0959cf13c7f573fa307e58@icrar.org>

steve-ord/daliuge,steve-ord/daliuge,steve-ord/daliuge,steve-ord/daliuge,steve-ord/daliuge,steve-ord/daliuge,steve-ord/daliuge