Update "default convention" images to not look terrible.

app/models/Entity/Convention.php

@@ -66,27 +66,9 @@ class Convention extends \DF\Doctrine\Entity
     /** @Column(name="image_url", type="string", length=200, nullable=true) */
     protected $image_url;
 
-    public function getImageUrl()
-    {
-        if ($this->image_url)
-            return $this->image_url;
-        else
-            return self::DEFAULT_IMAGE_FULL;
-    }
-
     /** @Column(name="thumbnail_url", type="string", length=200, nullable=true) */
     protected $thumbnail_url;
 
-    public function getThumbnailUrl()
-    {
-        if ($this->thumbnail_url)
-            return $this->thumbnail_url;
-        elseif ($this->image_url)
-            return $this->image_url;
-        else
-            return self::DEFAULT_IMAGE_THUMB;
-    }
-
     public function setImageUrl($new_url_full)
     {
         if ($new_url_full)

app/modules/default/views/scripts/convention/index.phtml

@@ -5,15 +5,17 @@ $this->headLink()
     ->appendStylesheet(\DF\Url::content('mid2013/convention.css'), 'all')
 ?>
 
-<? $this->placeholder('content_top')->captureStart(); ?>
-<div id="convention_header">
-    <div class="container">
-        <div class="item">
-            <img src="<?=\DF\Url::content($this->convention->getImageUrl()) ?>" alt="Convention Thumbnail">
+<? if ($this->convention->image_url): ?>
+    <? $this->placeholder('content_top')->captureStart(); ?>
+    <div id="convention_header">
+        <div class="container">
+            <div class="item">
+                <img src="<?=\DF\Url::content($this->convention->image_url) ?>" alt="Convention Thumbnail">
+            </div>
         </div>
     </div>
-</div>
-<? $this->placeholder('content_top')->captureEnd(); ?>
+    <? $this->placeholder('content_top')->captureEnd(); ?>
+<? endif; ?>
 
 <? foreach($this->videos as $folder_name => $videos): ?>
     <h2><i class="icon-folder-open"></i> <?=$folder_name ?></h2>