luci-app-acme: Hide keysize and days columns

The columns makes little sense and instead we can keep more space for domains.
The days is really advanced option that is better not to change and it's support may be removed for simplicity.

Signed-off-by: Sergey Ponomarev <stokito@gmail.com>

applications/luci-app-acme/htdocs/luci-static/resources/view/acme.js

@@ -63,6 +63,7 @@ return view.extend({
 		o.value("ec-384", _("ECC 384 bits"));
 		o.default = "2048";
 		o.rmempty = false;
+		o.modalonly = true;
 
 		o = s.taboption('general', form.DynamicList, "domains", _("Domain names"),
 			_("Domain names to include in the certificate. " +
@@ -154,6 +155,7 @@ return view.extend({
 		o.optional    = true;
 		o.placeholder = 90;
 		o.datatype    = 'uinteger';
+		o.modalonly = true;
 
 		return m.render()
 	}