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, 6 insertions, 2 deletions

diff --git a/app/views/users/index.html.erb b/app/views/users/index.html.erb
index 46e958bf..4f5266d8 100644
--- a/app/views/users/index.html.erb
+++ b/app/views/users/index.html.erb
@@ -1,5 +1,7 @@
 <h1>Admins</h1>
-<%= link_to 'New admin user', new_user_path(admin: true), class: 'action_button' %>
+<%= link_to new_user_path(admin: true), class: 'action_button' do %>
+  <%= icon("plus", library: "tabler", "aria-hidden": true) %> Create admin user
+<% end %>
 <table class="user_table">
   <tr class="header">
     <th>Login</th>
@@ -11,7 +13,9 @@
 </table>
 
 <h1>Users</h1>
-<%= link_to 'New user', new_user_path, class: 'action_button' %>
+<%= link_to new_user_path, class: 'action_button' do %>
+  <%= icon("plus", library: "tabler", "aria-hidden": true) %> Create user
+<% end %>
 <table class="user_table">
   <tr class="header">
     <th>Login</th>