Update to reccommended file structure

Use reccommended database structure
Switch to SQLite and update scheme along with it

gallery/templates/image.html

@@ -0,0 +1,17 @@
+{% extends 'layout.html' %}
+
+{% block header %}
+<img src="{{ url_for('static', filename='images/leaves.jpg') }}" alt="leaves" onload="imgFade(this)" style="display: none;"/>
+{% endblock %}
+
+{% block content %}
+    <div class="app">
+        <div class="image__container">
+            <img class="image__item" src="/uploads/original/{{ fileName }}" onload="imgFade(this)" style="display:none;"/>
+        </div>
+        <div class="image__info">
+            <h2>{{ fileName }}</h2>
+            <p>{{ id }}</p>
+        </div>
+    </div>
+{% endblock %}