Resolving URLs from contract (#1964)

* Fetching dapp from github.

* Unpacking dapp

* Removing hardcodes

* Proper Host validation

* Randomizing paths

* Splitting into files

* Serving donwloaded apps from different path

* Extracting URLHint to separate module

* Whitespace and docs

* Resolving from URLHint contract

* Fixing test

* Resolving githubhint url from registrar

* Proper redirections

* Fixing test

* fixing ethstore [ci skip]

* Correct version of registrar

* Removing superfluous Box

dapps/src/apps/mod.rs

@@ -33,7 +33,14 @@ pub const API_PATH : &'static str =  "api";
 pub const UTILS_PATH : &'static str =  "parity-utils";
 
 pub fn main_page() -> &'static str {
-	"/home/"
+	"home"
+}
+pub fn redirection_address(using_dapps_domains: bool, app_id: &str) -> String {
+	if using_dapps_domains {
+		format!("http://{}{}/", app_id, DAPPS_DOMAIN)
+	} else {
+		format!("/{}/", app_id)
+	}
 }
 
 pub fn utils() -> Box<Endpoint> {