Restore campaign terminology across UI and docs

src/routes/servers/[name]/+page.svelte

@@ -522,12 +522,12 @@
                 {/if}
                 <Card padding="lg">
                     <div class="panel-head">
-                        <h2>Rollout history</h2>
+                        <h2>Campaign history</h2>
                         <span class="panel-count">{history.length}</span>
                     </div>
                     {#if tabLoading}<EmptyState title="Loading history…" />{:else if history.length === 0}
                         <EmptyState
-                            title="No rollouts yet"
+                            title="No campaigns yet"
                             description="Nothing has been pushed to this server. Open a beta or push scripts to see history here."
                         />
                     {:else}
@@ -550,7 +550,7 @@
                         </div>
                     {/if}
                 </Card>
-                <ListFooter total={history.length} bind:limit={historyLimit} label="rollouts" />
+                <ListFooter total={history.length} bind:limit={historyLimit} label="campaigns" />
             {/if}
         </div>
     </div>