Images refactored, Feed icon replaced, Fixed comment form focus

app/assets/images/Info-UI.PNG

app/assets/images/Rss-UI.PNG

app/assets/images/add_comment.png

app/assets/images/admin.PNG

app/assets/images/comment_add.png

app/assets/images/download.png

app/assets/images/new_project.png

app/assets/images/rss_ui.png

app/assets/javascripts/note.js

app/assets/stylesheets/common.scss

app/controllers/projects_controller.rb

app/views/commits/_head.html.haml

app/views/issues/_head.html.haml

app/views/issues/index.html.haml

app/views/notes/_form.html.haml

app/views/projects/graph.html.haml

app/views/refs/_tree_file.html.haml

lib/assets/javascripts/branch-graph.js