Gem updates & githost logger

* Grit gem updated
* gitolite-client updated
* logger added
* few fixes

app/controllers/commits_controller.rb

@@ -15,6 +15,7 @@ class CommitsController < ApplicationController
   def index
     @repo = project.repo
     @limit, @offset = (params[:limit] || 40), (params[:offset] || 0)
+
     @commits = @project.commits(@ref, params[:path], @limit, @offset)
 
     respond_to do |format|

app/helpers/application_helper.rb

@@ -2,6 +2,7 @@ require 'digest/md5'
 module ApplicationHelper
 
   def gravatar_icon(user_email = '', size = 40)
+    return unless user_email
     gravatar_host = request.ssl? ? "https://secure.gravatar.com" :  "http://www.gravatar.com"
     user_email.strip!
     "#{gravatar_host}/avatar/#{Digest::MD5.hexdigest(user_email.downcase)}?s=#{size}&d=identicon"

app/models/commit.rb

@@ -73,7 +73,7 @@ class Commit
         repo.commits(ref, limit, offset)
       else
         repo.commits(ref)
-      end.map{ |c| Commit.new(c) } 
+      end.map{ |c| Commit.new(c) }
     end
 
     def commits_between(repo, from, to)