Move email confirmation to POST request (#3038)

* Add blade view to confirm email flow, move actual confirmation to POST request

* Apply fixes from StyleCI

[ci skip] [skip ci]

Co-authored-by: datitisev <datitisev@users.noreply.github.com>

views/confirm-email.blade.php

@@ -0,0 +1,25 @@
+@extends('flarum.forum::layouts.basic')
+
+@section('title', $translator->trans('core.views.confirm_email.title'))
+
+@section('content')
+    @if ($errors->any())
+        <div class="errors">
+            <ul>
+                @foreach ($errors->all() as $error)
+                    <li>{{ $error }}</li>
+                @endforeach
+            </ul>
+        </div>
+    @endif
+
+    <form class="form" method="POST" action="">
+        <input type="hidden" name="csrfToken" value="{{ $csrfToken }}" />
+
+        <p>{{ $translator->trans('core.views.confirm_email.text') }}</p>
+
+        <p class="form-group">
+            <button type="submit" class="button">{{ $translator->trans('core.views.confirm_email.submit_button') }}</button>
+        </p>
+    </form>
+@endsection