Add a unique title to the schema page (#189)

This will make it easier to figure out which tab I should click on. :)

app/views/blazer/queries/schema.html.erb

@@ -1,3 +1,5 @@
+<% blazer_title "Database Schema" %>
+
 <% @schema.each do |table| %>
   <h4>
     <%= table[:table] %>