edit: Limit resources to 100 instead of 127

edit: Limit resources to 100 instead of 127

Back in Empire 1, resources were limited consistently: fertility to
120, all others to 100.

When Chainsaw added setresource, consistency was lost: fertility got
limited to 100 there.

Chainsaw 3 changed edit to limit all resources to 127.

Commit 3fcee8dd and commit 8e430ae2 (both v4.3.11) changed fairland
and setsector to limit fertility to 100, matching setresource.

Now only edit remains different.  Change it to finally make things
consistent again.

Signed-off-by: Markus Armbruster <armbru@pond.sub.org>