Missing changes required to make new UI work (#2793)

* Getting rid of old dapps

* Updating proxypac and allowing home.parity on signer

* CORS support for API

* Fixing CORS - origin is sent with protocol

* Fixing signer with proxy

* Fixing grumbles

* Fix expect msg [ci:skip]

dapps/src/api/response.rs

@@ -19,6 +19,10 @@ use serde_json;
 use endpoint::Handler;
 use handlers::{ContentHandler, EchoHandler};
 
+pub fn empty() -> Box<Handler> {
+	Box::new(ContentHandler::ok("".into(), mime!(Text/Plain)))
+}
+
 pub fn as_json<T: Serialize>(val: &T) -> Box<Handler> {
 	let json = serde_json::to_string(val)
 		.expect("serialization to string is infallible; qed");
@@ -31,10 +35,6 @@ pub fn as_json_error<T: Serialize>(val: &T) -> Box<Handler> {
 	Box::new(ContentHandler::not_found(json, mime!(Application/Json)))
 }
 
-pub fn ping_response(local_domain: &str) -> Box<Handler> {
-	Box::new(EchoHandler::cors(vec![
-		format!("http://{}", local_domain),
-		// Allow CORS calls also for localhost
-		format!("http://{}", local_domain.replace("127.0.0.1", "localhost")),
-	]))
+pub fn ping() -> Box<Handler> {
+	Box::new(EchoHandler::default())
 }