Changed Title and Back link to homepage

edit.html.erb

<h1 id="page_title">Edit Your Profile</h1>

<%= render 'form' %>

<%= link_to 'Show', @user %> |
<%= link_to 'Back', homepage_url %>

new.html.erb

<h1 id="page_title">Registration</h1>

<%= render 'form' %>

<%= link_to 'Back', homepage_url %>

show.html.erb

<h1 id="page_title"><%= @user.username %>'s Profile</h1>
<p id="notice"><%= notice %></p>

<p>
  <b>Username:</b>
  <%= @user.username %>
</p>

<p>
  <b>Email:</b>
  <%= @user.email %>
</p>


<%= link_to 'Rails Boards', homepage_url %>