added reference image class, also tweaked DB classes to have foreign keys, so you cant delete a person connected to a file (tested). Also made refimg class do some quirky bootstrap/jquery to get file dialogs not looking like crap

templates/refimgs.html

@@ -0,0 +1,15 @@
+{% extends "base.html" %}
+
+{% block main_content %}
+<h3>Show All Reference Images</h3>
+<table id="refimg_table" class="table table-striped table-sm" data-toolbar="#toolbar" data-search="true">
+	<thead>
+		<tr class="thead-light"><th>Filename</th></tr>
+	</thead>
+	<tbody>
+	{% for refimg in refimgs %}
+		<tr><td><a href="{{url_for('refimg', id=refimg.id )}}">{{refimg.fname}}</td></tr>
+	{% endfor %}
+	</tbody>
+</table>
+{% endblock main_content %}