FEATURE #1373: add history of content

This commit contains only core funcionality of displaying history. Module settings must be implemented in each module.

resources/views/admin/history/overview.blade.php

@@ -0,0 +1,31 @@
+@extends('admin.layout')
+
+@section('pageName', @trans('admin/history.pageName', ['name' => $page->title]))
+
+@section('content')
+
+    <div class="row">
+        <h2>@lang('admin/history.pageName', ['name' => $page->title])</h2>
+
+    </div>
+
+    <div class="row">
+        <ul class="accordion" data-accordion>
+            @foreach($history['changesets'] as $revision => $changes)
+            <li class="accordion-item" data-accordion-item>
+                <a class="accordion-title">
+                    <strong>{{$history['info'][$revision]['user']['name']}}</strong> |
+                    {{$history['info'][$revision]['changed_at']}} |
+                    {{trans_choice('admin/history.numOfChanges', count($changes))}}
+                </a>
+
+                @foreach($changes as $change)
+                <div class="accordion-content" data-tab-content>
+                    <strong>{{$change->column_trans}}</strong>: {!! $change->diff !!}
+                </div>
+                    @endforeach
+            </li>
+            @endforeach
+        </ul>
+    </div>
+@stop