Normalize action-button wording and add icons app-wide

"New X" becomes "Create X" throughout (users, events, assets, menu
items, nodes), matching the verb-first pattern the dashboard's own
signposts already established, with a shared plus icon rather than a
document-flavored one that only made sense next to "post". The
"Destroy"/"destroy"/"Delete" family is normalized to "Destroy"
everywhere, with a shared trash icon; occurrences#index and
pages#index also pick up the destructive button class they'd been
silently missing. Filter and Search convert from submit_tag to
button_tag, the only way either can hold an icon alongside its label.

Edit and the node editor's three dynamic labels (Continue Editing /
Edit Draft / Lock + Edit) share one icon without touching their
wording -- unlike Destroy's family, the state nuance in the text is
real information, not just inconsistent phrasing.

1 files changed, 3 insertions, 1 deletions

diff --git a/app/views/nodes/index.html.erb b/app/views/nodes/index.html.erb
index 2688ea12..3bb251c5 100644
--- a/app/views/nodes/index.html.erb
+++ b/app/views/nodes/index.html.erb
@@ -1,7 +1,9 @@
 <h1>Nodes</h1>
 
 <div>
-  <%= link_to 'New node', new_node_path, class: 'action_button' %>
+  <%= link_to new_node_path, class: 'action_button' do %>
+    <%= icon("plus", library: "tabler", "aria-hidden": true) %> Create node
+  <% end %>
   <span class="field_hint">Creates a node with no parent or kind set — for a specific page, use the wizard's create flow or "add child" from an existing node instead.</span>
 </div>