Reorganize admin.css and overhaul button/link/flash visual hierarchy

Sorts rules by hierarchy (base -> layout -> navigation -> buttons ->
tables -> forms -> components), consolidates three duplicated media
query breakpoints into one each, and adds section comments. Bundled
with this reorganization, since the file was rewritten wholesale:

- form.button_to.state_changing: new tinted-pill variant (blue) for
  Publish/Restore/Unlock/Revoke, matching .destructive's pattern
- form.button_to.destructive: now a tinted pill at rest instead of
  plain colored text, consistent padding at rest and on hover
- Scoped wavy-underline link-visibility fix for #page_editor,
  table.node_table, table.assets_table, table.events_table,
  table.user_table, .add_child_links, and the dashboard draft list
- #flash decoupled from the page's structural nav-to-content spacing
  (.admin_content_spacer), which the flash div was silently providing
  as a side effect whenever it rendered

0 files changed, 0 insertions, 0 deletions