fix(web): kebab anti-clipping partajat + panou admin redenumit + tabel mapari compact

- "Panou admin" -> "Conturi clienti" (titlu, antet, link meniu hamburger)
- Kebab actiuni mutat in component partajat (base.html) cu position:fixed
  pozitionat din JS: .tablewrap{overflow-x:auto} inducea overflow-y:auto care
  taia dropdown-ul pe ultimul rand (meniul admin nu se vedea). Sters CSS local.
- Mapari salvate: Salveaza/Sterge mutate in kebab (legate prin form=); coloana
  "In coada" doar checkbox (macro autosend_toggle compact, semantica de prezenta
  pastrata); select cod RAR limitat la 240px -> tabelul incape fara scroll.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

app/web/templates/_preview_import.html

@@ -97,7 +97,7 @@
           </select>
         </div>
         <div class="mapcol">
-          {{ ui.autosend_toggle(checked=True) }}
+          {{ ui.autosend_toggle(checked=True, label="In coada automat") }}
         </div>
         <div class="mapcol">
           <button type="submit" style="min-height:44px;">Salveaza</button>