move templates out of vendor specific locations

Lets not kid ourselves.  The whole apps templates are client specific.
Lets just remove that and not think it isn't.

pinaxcon/templates/registrasion/base.html

@@ -1,2 +1,2 @@
-{% extends "lca2017/content_page.html" %}
+{% extends "content_page.html" %}
 {% load staticfiles %}

pinaxcon/templates/symposion/schedule/presentation_detail.html

@@ -46,7 +46,7 @@
   <h2>Presented by</h2>
   {% for speaker in presentation.speakers %}
     {% speaker_photo speaker 512 as speaker_photo_url %}
-    {% include "lca2017/_right_floating_image.html" with image_url=speaker_photo_url %}
+    {% include "_right_floating_image.html" with image_url=speaker_photo_url %}
 
     <h3><a href="{% url "speaker_profile" speaker.pk %}">{{ speaker }}</a></h3>
 

pinaxcon/templates/symposion/schedule/public_base.html

@@ -1,4 +1,4 @@
-{% extends "lca2017/content_page.html" %}
+{% extends "content_page.html" %}
 
 {% load staticfiles %}
 

pinaxcon/templates/utility_page.html

@@ -1,4 +1,4 @@
-{% extends "lca2017/content_page.html" %}
+{% extends "content_page.html" %}
 {% load staticfiles %}
 
 {% comment %}