fix back button and some copy

templates/tut.html

@@ -2,7 +2,7 @@
 content %}
 <nav>
     <small>
-        <a href="/"><~ back</a>
+        <a href="/tuts"><~ back</a>
     </small>
 </nav>
 {{content}} {% endblock content%}

templates/tuts.html

@@ -6,7 +6,7 @@ content %}
     </small>
 </nav>
 
-<h1>Notes</h1>
+<h1>Micro Tuts</h1>
 <p>Here all my Micro Tuts</p>
 <ul>
     {% for tut in tuts_list %}