Ability to delete part

- Provides confirmation form
- Shows the flow-on effects (model.CASCADE) from deleting this part
- Bootstrap makes it prettyful

InvenTree/part/templates/base.html

@@ -9,7 +9,8 @@
 <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
 
 <!-- Bootstrap CSS -->
-<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css" integrity="sha384-9gVQ4dYFwwWSjIDZnLEWnxCjeSWFphJiwGPXr1jddIhOegiu1FwO5qRGvFXOdJZ4" crossorigin="anonymous">
+
+<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
 
 <!-- Local stylesheet -->
 <link rel="stylesheet" href="{% static 'css/inventree.css' %}">
@@ -31,7 +32,7 @@ InvenTree
 
 {% include "navbar.html" %}
 
-<div class="inventree-content">
+<div class="container-fluid inventree-content">
 {% block content %}
 <!-- Each view fills in here.. -->
 {% endblock %}

InvenTree/part/templates/part/delete.html

@@ -1,2 +1,51 @@
 {% extends 'part/part_base.html' %}
 
+{% block details %}
+
+<div class="panel panel-danger">
+    <div class="panel-heading">Are you sure you want to delete part '{{ part.name }}'?</div>
+    <div class="panel-body">
+
+    <p><b>Deleting this part is a permanent action and cannot be undone.</b></p>
+
+    {% if part.usedInCount > 0 %}
+    <p>This part is used in BOMs for {{ part.usedInCount }} other parts. If you delete this part, the BOMs for the following parts will be updated:
+    <ul class="list-group">
+        {% for child in part.used_in.all %}
+        <li class='list-group-item'>{{ child.part.name }} - {{ child.part.description }}</li>
+        {% endfor %}
+    </p>
+    {% endif %}
+
+    {% if part.locations.all|length > 0 %}
+    <p>There are {{ part.locations.all|length }} stock entries defined for this part. If you delete this part, the following stock entries will also be deleted:
+        <ul class='list-group'>
+            {% for stock in part.locations.all %}
+            <li class='list-group-item'>{{ stock.location.name }} - {{ stock.quantity }} items</li>
+            {% endfor %}
+        </ul>
+    </p>
+    {% endif %}
+
+    {% if part.supplier_parts.all|length > 0 %}
+    <p>There are {{ part.supplier_parts.all|length }} suppliers defined for this part. If you delete this part, the following supplier parts will also be deleted.
+        <ul class='list-group'>
+            {% for spart in part.supplier_parts.all %}
+            <li class='list-group-item'>{{ spart.supplier.name }} - {{ spart.SKU }}</li>
+            {% endfor %}
+        </ul>
+    </p>
+    {% endif %}
+
+    {% if part.serials.all|length > 0 %}
+    <p>There are {{ part.serials.all|length }} unique parts tracked for '{{ part.name }}'. Deleting this part will permanently remove this tracking information.</p>
+    {% endif %}
+
+  <form action="" method="post">{% csrf_token %}
+    <input type="submit" name='confirm' value="Confirm" />
+    <input type="submit" name="cancel" value="Cancel" />
+  </form>
+
+ </div>
+</div>
+{% endblock %}