feat: Datafields page, merge fee types into membership_fee_settings, sidebar

- Add /admin/datafields (DatafieldsLive) for member and custom field config
- Remove Memberdata block from GlobalSettingsLive
- Router: drop /membership_fee_types, add new_fee_type and edit_fee_type under membership_fee_settings
- MembershipFeeSettingsLive: fee types table, collapsible examples; Index links updated
- PagePaths: admin_datafields, admin_import; remove membership_fee_types
- Sidebar: order and labels (Basic settings, Datafields, Membership fee settings, Import, Users, Roles)
- Gettext: German translations for sidebar and OIDC
- Tests: datafields and fee routes, permission and form tests updated

test/mv_web/live/member_field_live/index_component_test.exs

@@ -23,7 +23,7 @@ defmodule MvWeb.MemberFieldLive.IndexComponentTest do
 
   describe "rendering" do
     test "renders all member fields from Constants", %{conn: conn} do
-      {:ok, _view, html} = live(conn, ~p"/settings")
+      {:ok, _view, html} = live(conn, ~p"/admin/datafields")
 
       # Check that all member fields are displayed
       member_fields = Mv.Constants.member_fields()
@@ -36,7 +36,7 @@ defmodule MvWeb.MemberFieldLive.IndexComponentTest do
     end
 
     test "displays show_in_overview status as badge", %{conn: conn} do
-      {:ok, _view, html} = live(conn, ~p"/settings")
+      {:ok, _view, html} = live(conn, ~p"/admin/datafields")
 
       # Should have "Show in overview" column header
       assert html =~ "Show in overview" or html =~ "Show in Overview"
@@ -46,7 +46,7 @@ defmodule MvWeb.MemberFieldLive.IndexComponentTest do
     end
 
     test "displays required status column", %{conn: conn} do
-      {:ok, _view, html} = live(conn, ~p"/settings")
+      {:ok, _view, html} = live(conn, ~p"/admin/datafields")
 
       # Should have "Required" column; email is always required
       assert html =~ "Required" or html =~ "required"
@@ -59,7 +59,7 @@ defmodule MvWeb.MemberFieldLive.IndexComponentTest do
       {:ok, _updated} =
         Membership.update_settings(settings, %{member_field_visibility: %{}})
 
-      {:ok, _view, html} = live(conn, ~p"/settings")
+      {:ok, _view, html} = live(conn, ~p"/admin/datafields")
 
       # All fields should show as visible (Yes) by default
       # Check for "Yes" badge or similar indicator
@@ -74,7 +74,7 @@ defmodule MvWeb.MemberFieldLive.IndexComponentTest do
       {:ok, _updated} =
         Membership.update_member_field_visibility(settings, visibility_config)
 
-      {:ok, _view, html} = live(conn, ~p"/settings")
+      {:ok, _view, html} = live(conn, ~p"/admin/datafields")
 
       # Street and house_number should show as hidden (No)
       # Other fields should show as visible (Yes)
@@ -102,7 +102,7 @@ defmodule MvWeb.MemberFieldLive.IndexComponentTest do
     end
 
     test "marks email as required (always from settings)", %{conn: conn} do
-      {:ok, _view, html} = live(conn, ~p"/settings")
+      {:ok, _view, html} = live(conn, ~p"/admin/datafields")
 
       # Email is always required
       assert html =~ "email" or html =~ "Email"
@@ -119,7 +119,7 @@ defmodule MvWeb.MemberFieldLive.IndexComponentTest do
           required: true
         )
 
-      {:ok, _view, html} = live(conn, ~p"/settings")
+      {:ok, _view, html} = live(conn, ~p"/admin/datafields")
 
       # First name row should show Required (and Optional for others)
       assert html =~ "First name" or html =~ "first_name"
@@ -127,7 +127,7 @@ defmodule MvWeb.MemberFieldLive.IndexComponentTest do
     end
 
     test "optional fields show Optional when not required in settings", %{conn: conn} do
-      {:ok, _view, html} = live(conn, ~p"/settings")
+      {:ok, _view, html} = live(conn, ~p"/admin/datafields")
 
       # Email is required; other fields default to optional
       assert html =~ "Optional"