Add a grouped tag+node search endpoint for the upcoming dashboard

AdminController#dashboard_search returns tags and nodes as separate,
labeled groups (via ActsAsTaggableOn::Tag.named_like and
Node.editor_search) rather than the flat per-node list every existing
picker returns. initSearchPicker gains a renderResults callback option
that, when given, replaces the default per-node rendering entirely --
lets the dashboard render its two labeled groups without a second,
parallel picker implementation.

resultsHeaderHtml (the "Press Enter to see all results" hint) is now
threaded through as a third argument to renderResults, so a picker with
custom rendering can still show it -- previously only the default
per-node branch ever did.

Tags link straight to the existing /admin/nodes/tags/:tag view rather
than becoming an in-place filter chip.

1 files changed, 10 insertions, 0 deletions

diff --git a/public/stylesheets/admin.css b/public/stylesheets/admin.css
index da31535..ade3a62 100644
--- a/public/stylesheets/admin.css
+++ b/public/stylesheets/admin.css
@@ -1052,6 +1052,16 @@ div#draft_list table td.actions a {
   border-bottom: none;
 }
 
+.search_results p.search_group_label {
+  margin: 8px 0 2px;
+  padding: 0;
+  border-bottom: none;
+  font-size: 0.75rem;
+  color: #969696;
+  text-transform: lowercase;
+  font-weight: normal;
+}
+
 /* ============================================================
    Menu items (navigation editor)
    ============================================================ */