added messaging and friend stuff that wasn't checked in

app/controllers/friend_controller.rb

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+class FriendController < ApplicationController
+end

app/models/friend.rb

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+class Friend < ActiveRecord::Base
+  belongs_to :user
+  
+end

app/views/message/new.rhtml

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+<% display_name = (User.find_by_id(params[:user_id])).display_name %>
+
+<h2>Send a new message to <%= display_name %></h2>
+
+<% if params[:display_name] %>
+<p>Writing a new message to <%= params[:display_name] %></p>  
+<p>TODO: drop down box of your friends</p>
+<%end%>
+
+<%= error_messages_for 'message' %>
+
+<%= start_form_tag :controller => 'message', :action => 'new' %>
+subject: <%= text_field 'message', 'title' %><br>
+body: <%= text_area 'message', 'body' %><br>
+  <%= submit_tag 'Send' %>
+<% end_form_tag %>
+
+<br />
+
+<%= link_to 'Back to my account', :controller => 'user', :action => 'account' %>

app/views/message/read.rhtml

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+<h2>Reading your messages</h2>
+
+<table>
+<th>from</th>
+<th>message</th>
+<th>date</th>
+<th>reply</th>
+<tr><td><%= (User.find_by_id(@message.from_user_id)).display_name %></td>
+<td><%= @message.body %></td>
+<td><%= @message.sent_on %></td>
+<td><%= link_to 'reply', :controller => 'message', :action => 'new', :user_id => @message.from_user_id %></td>
+</table>
+
+<%= start_form_tag :controller => 'message', :action => 'mark', :message_id => @message.id %>
+<%= submit_tag 'Mark as read' %>
+