Source creation and editing

A UI has been added for entering new sources and editing pre-existing
ones. No more having to edit the DB directly when wanting to add or
remove a source.

resources/views/back/sources.blade.php

@@ -0,0 +1,42 @@
+@extends('frame') 
+
+@section('title', 'Den | Sources Admin')
+
+    @php
+    switch($mode)
+        {
+            case 'source-create':
+                $action_url = '/den/source/create';
+                break;
+            case 'source-edit':
+                $action_url = '/den/source/edit';
+                break;
+        }
+    @endphp
+    @section('main-content')
+        <section>
+            <article>
+                @switch($mode)
+                    @case('source-edit') 
+                    <h2>Edit Info for {{$source->url}}</h2>
+                    @include('forms.source-edit') 
+                    <br />
+                    @break
+
+                    @case('source-create') 
+                    <h2>New Source Info</h2>
+                    @include('forms.source-edit') 
+                    <br />
+                    @break
+
+                    @default
+                        <h2>Current Sources </h2>
+                        @foreach($sources as $source)
+                            <a href="/den/source/{{$source->id}}">{{$source->url}}</a><br />
+                        @endforeach
+                        <h2>Add Source </h2>
+                        <a href="/den/source/edit/create">Add a new Source</a><br />
+                    @endswitch
+            </article>
+        </section>
+    @endsection