Django cannot concatenate 'str' and 'int' objects on DateField
<p>I'm pretty new with Mezzanine and Django. I'm getting an error when trying to save a date field off an admin form:</p>

<pre><code>cannot concatenate 'str' and 'int' objects
</code></pre>

<p>models.py:</p>

<pre><code>release_date = models.DateField("Release Date", null=True, blank=True)
</code></pre>

<p>admin.py: </p>

<pre><code>film_fieldsets = deepcopy(DisplayableAdmin.fieldsets)
film_fieldsets[0][1]["fields"].insert(1, "release_date")
</code></pre>

<p>The date field rendered by django seems to save in the YYYY-MM-DD, i.e. 2016-02-18. I'm guessing that the dashes are causing the mismatch, but did I just not implement the field correctly or do I need to add a function to process this?</p>