add favorite/unfavorite links to mobile page

app/assets/stylesheets/mobile.css.scss

@@ -51,8 +51,14 @@ img#image {
   margin-top: 5px;
 }
 
-div#tags {
+div#options {
   margin-top: 10px;
+  font-size: 24pt;
+  font-weight: bold;
+}
+
+div#tags {
+  margin-top: 30px;
 
   li {
     margin: 10px 0;

app/controllers/favorites_controller.rb

@@ -24,10 +24,22 @@ class FavoritesController < ApplicationController
     else
       @error_msg = "You can only keep up to #{CurrentUser.favorite_limit} favorites. Upgrade your account to save more."
     end
+
+    respond_with(@post) do |format|
+      format.html do
+        redirect_to(mobile_post_path(@post))
+      end
+    end
   end
 
   def destroy
     @post = Post.find(params[:id])
     @post.remove_favorite!(CurrentUser.user)
+
+    respond_with(@post) do |format|
+      format.html do
+        redirect_to(mobile_post_path(@post))
+      end
+    end
   end
 end

app/views/layouts/mobile.html.erb

@@ -5,6 +5,8 @@
   <link rel="shortcut icon" href="/favicon.ico" type="image/x-icon">
   <%= csrf_meta_tag %>
   <%= stylesheet_link_tag "mobile", :media => "screen" %>
+  <%= javascript_include_tag "jquery-1.10.1.min.js" %>
+  <%= javascript_include_tag "rails.js" %>
   <%= Danbooru.config.custom_html_header_content %>
   <%= yield :html_header %>
 </head>

app/views/mobile/posts/show.html.erb

@@ -5,6 +5,15 @@
 
 <%= @post.presenter.image_html(self) %>
 
+<div id="options">
+  <% if @post.favorited_by?(CurrentUser.user.id) %>
+    <%= link_to "Unfavorite", favorite_path(@post), :method => :delete %> |
+  <% else %>
+    <%= link_to "Favorite", favorites_path(:post_id => @post.id), :method => :post %> |
+  <% end %>
+  <%= link_to "Non-mobile Version", post_path(@post.id) %>
+</div>
+
 <div id="tags">
   <%= @post.presenter.tag_list_html(self, :name_only => true, :path_prefix => "/m/posts") %>
 </div>