added upgrade mailer

app/assets/stylesheets/common/paginator.css.scss

@@ -3,7 +3,7 @@
 div.paginator {
   display: block;
   padding: 2em 0 1em 0;
-  font-size: 1.2em;
+  font-size: 2em;
   text-align: center;
   font-weight: bold;
   clear: both;

app/assets/stylesheets/specific/users.css.scss

@@ -17,7 +17,7 @@ div#c-users {
   }
   
   div#a-new {
-    max-width: 50em;
+    max-width: 40em;
     
     p {
       font-size: 1.2em;
@@ -44,7 +44,7 @@ div#c-users {
   }
   
   div#a-upgrade-information {
-    max-width: 55em;
+    max-width: 40em;
     font-size: 1.2em;
     
     form {
@@ -63,7 +63,7 @@ div#c-users {
       margin-bottom: 1em;
       
       div.column {
-        width: 15em;
+        width: 11em;
         float: left;
         border: 1px solid #666;
         @include border-radius(4px);

app/controllers/users_controller.rb

@@ -41,6 +41,16 @@ class UsersController < ApplicationController
     @user.update_attributes(params[:user], :as => CurrentUser.role)
     respond_with(@user)
   end
+  
+  def upgrade
+    @user = User.find(params[:id])
+    
+    if params[:email] =~ /paypal/
+      UserMailer.upgrade_fail(params[:email]).deliver
+    else
+      UserMailer.upgrade(@user, params[:email]).deliver
+    end
+  end
 
 private
   def check_privilege(user)

app/mailers/user_mailer.rb

@@ -5,4 +5,12 @@ class UserMailer < ActionMailer::Base
     @dmail = dmail
     mail(:to => dmail.to.email, :subject => "#{Danbooru.config.app_name} - Message received from #{dmail.from.name}")    
   end
+  
+  def upgrade(user, email)
+    mail(:to => email, :subject => "#{Danbooru.config.app_name} account upgrade")
+  end
+  
+  def upgrade_fail(email)
+    mail(:to => email, :subject => "#{Danbooru.config.app_name} account upgrade")
+  end
 end

app/views/user_mailer/upgrade.html.erb

@@ -0,0 +1 @@
+<p>You can upgrade your account by sending $10 USD via Paypal to <%= mail_to Danbooru.config.upgrade_account_email %>. Be sure to include your username.</p>

app/views/user_mailer/upgrade_fail.html.erb

@@ -0,0 +1 @@
+<p>Account upgrades are currently disabled.</p>

config/danbooru_default_config.rb

@@ -22,6 +22,10 @@ module Danbooru
       "webmaster@#{server_host}"
     end
     
+    def upgrade_account_email
+      contact_email
+    end
+    
     # Stripped of any special characters.
     def safe_app_name
       app_name.gsub(/[^a-zA-Z0-9_-]/, "_")