Update talk URLs

app/config/sculpin_kernel.yml

@@ -4,4 +4,6 @@ sculpin_content_types:
         taxonomies:
             - tags
     talks:
-        permalink: talks/:year/:month/:day/:slug_title/
+        permalink: talks/:filename/
+        taxonomies:
+            - tags

source/_talks/2012-09-05-what-is-this-drupal-thing.md

@@ -7,7 +7,7 @@ event:
     location: Cardiff, UK
 video: https://vimeo.com/49827006
 vimeo: 49827006
-slug: what-this-drupal-thing
+slug: what-is-this-drupal-thing
 tags:
     - meetup
     - drupal

source/_talks/2013-07-10-drupal-ldap.md

@@ -9,4 +9,5 @@ tags:
     - swdug
     - drupal
     - ldap
+slug: drupal-ldap
 ---

source/_talks/2014-08-19-drupal-association.md

@@ -9,5 +9,6 @@ tags:
     - swdug
     - drupal
     - drupal-association
+slug: drupal-association
 ---
 An impromptu talk about the [Drupal Association](https://association.drupal.org), and what I’ve been working on since joining the Engineering team earlier in the year.

source/_talks/2015-02-28-drupalorg-2015-2.md

@@ -10,5 +10,5 @@ tags:
     - drupalcamp
     - drupalcamp-london
     - drupal-association
-slug: drupalorg-2015
+slug: drupalorg-2015-2
 ---