Move files, complete PHP migration

The application works the same way as the F# version

src/public/request/snooze.php

@@ -1,7 +1,8 @@
 <?php declare(strict_types=1);
 
-use MyPrayerJournal\{Table, UI};
 use BitBadger\PDODocument\Patch;
+use MyPrayerJournal\Table;
+use MyPrayerJournal\UI\Component;
 
 require '../../start.php';
 
@@ -14,4 +15,4 @@ Patch::byId(Table::REQUEST, $req->id, ['snoozedUntil' => $until->format('c')]);
 // TODO: message
 
 hide_modal('snooze');
-UI::journal();
+Component::journal();