refactor(rest): add Safari friendly CORS headers

On preflight request Safari sometimes expect `Access-Control-Allow-Origin`
header.

Now we are providing it.

api/rest.go

@@ -128,6 +128,7 @@ func preflightHandler(w http.ResponseWriter, r *http.Request) {
 	w.Header().Set("Access-Control-Allow-Headers", strings.Join(headers, ","))
 	methods := []string{"GET", "HEAD", "POST", "PUT", "DELETE"}
 	w.Header().Set("Access-Control-Allow-Methods", strings.Join(methods, ","))
+	w.Header().Set("Access-Control-Expose-Headers", "Access-Control-Allow-Origin")
 	logrus.Debugf("rest: preflight request for %s", r.URL.Path)
 	return
 }

bindata/bindata.go

@@ -93,7 +93,7 @@ func templateAuthSwaggerJson() (*asset, error) {
 		return nil, err
 	}
 
-	info := bindataFileInfo{name: "template/auth.swagger.json", size: 2854, mode: os.FileMode(420), modTime: time.Unix(1522672056, 0)}
+	info := bindataFileInfo{name: "template/auth.swagger.json", size: 2854, mode: os.FileMode(420), modTime: time.Unix(1522840999, 0)}
 	a := &asset{bytes: bytes, info: info}
 	return a, nil
 }
@@ -113,7 +113,7 @@ func templateBundleJs() (*asset, error) {
 		return nil, err
 	}
 
-	info := bindataFileInfo{name: "template/bundle.js", size: 559678, mode: os.FileMode(420), modTime: time.Unix(1522672074, 0)}
+	info := bindataFileInfo{name: "template/bundle.js", size: 559678, mode: os.FileMode(420), modTime: time.Unix(1522841011, 0)}
 	a := &asset{bytes: bytes, info: info}
 	return a, nil
 }
@@ -193,7 +193,7 @@ func templateIndexHtml() (*asset, error) {
 		return nil, err
 	}
 
-	info := bindataFileInfo{name: "template/index.html", size: 577, mode: os.FileMode(420), modTime: time.Unix(1522672074, 0)}
+	info := bindataFileInfo{name: "template/index.html", size: 577, mode: os.FileMode(420), modTime: time.Unix(1522841011, 0)}
 	a := &asset{bytes: bytes, info: info}
 	return a, nil
 }
@@ -233,7 +233,7 @@ func templateNetworkSwaggerJson() (*asset, error) {
 		return nil, err
 	}
 
-	info := bindataFileInfo{name: "template/network.swagger.json", size: 6669, mode: os.FileMode(420), modTime: time.Unix(1522672056, 0)}
+	info := bindataFileInfo{name: "template/network.swagger.json", size: 6669, mode: os.FileMode(420), modTime: time.Unix(1522840999, 0)}
 	a := &asset{bytes: bytes, info: info}
 	return a, nil
 }
@@ -273,7 +273,7 @@ func templateUserSwaggerJson() (*asset, error) {
 		return nil, err
 	}
 
-	info := bindataFileInfo{name: "template/user.swagger.json", size: 6907, mode: os.FileMode(420), modTime: time.Unix(1522672056, 0)}
+	info := bindataFileInfo{name: "template/user.swagger.json", size: 6907, mode: os.FileMode(420), modTime: time.Unix(1522840999, 0)}
 	a := &asset{bytes: bytes, info: info}
 	return a, nil
 }
@@ -293,7 +293,7 @@ func templateVpnSwaggerJson() (*asset, error) {
 		return nil, err
 	}
 
-	info := bindataFileInfo{name: "template/vpn.swagger.json", size: 3732, mode: os.FileMode(420), modTime: time.Unix(1522672056, 0)}
+	info := bindataFileInfo{name: "template/vpn.swagger.json", size: 3732, mode: os.FileMode(420), modTime: time.Unix(1522840999, 0)}
 	a := &asset{bytes: bytes, info: info}
 	return a, nil
 }