Rework templates to be less hard-coded

pages/edit.html

@@ -0,0 +1,7 @@
+{{define "main"}}
+<form method="POST">
+    <h2><label for="text">{{ .Title }}:</label></h2>
+    <textarea id="text" cols="40" rows="15" name="text">{{ .Content }}</textarea>
+    <button type="submit">Save</button>
+</form>
+{{end}}