Moved the new button link widget to the navigation app and made it more generic

apps/navigation/widgets.py

@@ -0,0 +1,29 @@
+from django.utils.safestring import mark_safe
+from django.conf import settings
+from django.utils.translation import ugettext_lazy as _
+from django.core.urlresolvers import reverse
+from django.template.defaultfilters import capfirst
+from django.core.exceptions import PermissionDenied
+
+from permissions.api import check_permissions
+
+
+def button_navigation_widget(request, link):
+    if 'permissions' in link:
+        try:
+            check_permissions(request.user, link['permissions'])
+            return render_widget(link)
+        except PermissionDenied:
+            return u''
+    else:
+        return render_widget(link)
+
+ 
+def render_widget(link):
+    return mark_safe(u'<a style="text-decoration:none; margin-right: 10px;" href="%(url)s"><button style="vertical-align: top; padding: 1px; width: 110px; height: 100px; margin: 10px;"><img src="%(static_url)simages/icons/%(icon)s" alt="%(image_alt)s" /><p style="margin: 0px 0px 0px 0px;">%(string)s</p></button></a>' % {
+        'url': reverse(link['view']) if 'view' in link else link['url'],
+        'icon': link.get('icon', 'link_button.png'),
+        'static_url': settings.STATIC_URL,
+        'string': capfirst(link['text']),
+        'image_alt': _(u'icon'),
+    })