Sign-in goes straight to the identity provider

With single sign-on there is nothing to choose, so /authorize redirects to
it; the page shows only when something went wrong there.
Server 0.1.3, chart 0.1.4.

Cargo.lock

@@ -43,7 +43,7 @@ dependencies = [
 
 [[package]]
 name = "archify-sync-protocol"
-version = "0.1.2"
+version = "0.1.3"
 dependencies = [
  "chrono",
  "serde",
@@ -53,7 +53,7 @@ dependencies = [
 
 [[package]]
 name = "archify-sync-server"
-version = "0.1.2"
+version = "0.1.3"
 dependencies = [
  "anyhow",
  "archify-sync-protocol",
@@ -83,7 +83,7 @@ dependencies = [
 
 [[package]]
 name = "archify-sync-store"
-version = "0.1.2"
+version = "0.1.3"
 dependencies = [
  "chrono",
  "serde_json",