Patched UsersHelper#user_settings_tabs to add a new Rates tab

* Wrapped UsersHelper#user_settings_tabs with an alias_method_chain
* Added the new Rate element to the return of user_settings_tabs
* Added RSpecs to confirm the change works without breaking
* Added a partial view for users/rates which will be used by Redmine
  when it renders the user edit panel

  #1913

app/views/users/_rates.html.erb

@@ -0,0 +1 @@
+<h1>Hello Rates</h1>

init.rb

@@ -1,5 +1,7 @@
 require 'redmine'
 
+require 'rate_users_helper_patch'
+
 Redmine::Plugin.register :redmine_rate do
   name 'Rate Plugin'
   author 'Eric Davis'

lang/en.yml

@@ -1,2 +1,2 @@
 # English strings go here
-my_label: "My label"
+rate_label_rates: Rates

lib/rate_users_helper_patch.rb

@@ -0,0 +1,24 @@
+require_dependency 'users_helper'
+
+module RateUsersHelperPatch
+  def self.included(base) # :nodoc:
+    base.send(:include, InstanceMethods)
+
+    base.class_eval do
+      alias_method_chain :user_settings_tabs, :rate_tab
+    end
+  end
+  
+  module InstanceMethods
+    # Adds a rates tab to the user administration page
+    def user_settings_tabs_with_rate_tab
+      tabs = user_settings_tabs_without_rate_tab
+      tabs << { :name => 'rates', :partial => 'users/rates', :label => :rate_label_rates}
+      return tabs
+    end
+    
+  end
+end
+
+UsersHelper.send(:include, RateUsersHelperPatch)
+

spec/lib/rate_users_helper_patch_spec.rb

@@ -0,0 +1,38 @@
+require File.dirname(__FILE__) + '/../spec_helper'
+
+class UsersHelperWrapper
+  include UsersHelper
+end
+
+describe UsersHelper, 'user_settings' do
+  it 'should return 3 tabs' do
+    helper = UsersHelperWrapper.new
+    helper.user_settings_tabs.should have(3).things
+    
+  end
+  
+  it 'should include a rate tab at the end' do
+    helper = UsersHelperWrapper.new
+    rate_tab = helper.user_settings_tabs[-1]
+    rate_tab.should_not be_nil
+  end
+
+  describe 'rate tab' do
+    before(:each) do
+      helper = UsersHelperWrapper.new
+      @rate_tab = helper.user_settings_tabs[-1]
+    end
+
+    it 'should have the name of "rates"' do
+      @rate_tab[:name].should eql('rates')
+    end
+
+    it 'should use the rates partial' do
+      @rate_tab[:partial].should eql('users/rates')
+    end
+
+    it 'should use the i18n rates label' do
+      @rate_tab[:label].should eql(:rate_label_rates)
+    end
+  end
+end