Replace page_title with page-title. Correct margin for some blocks/layouts

app/views/public/projects/index.html.haml

 .row
   .span6
-    %h3.page_title
+    %h3.page-title
       Projects (#{@projects.total_count})
       %small with read-only access
   .span6

app/views/snippets/_form.html.haml

-%h3.page_title
+%h3.page-title
   = @snippet.new_record? ? "New Snippet" : "Edit Snippet ##{@snippet.id}"
 %hr
 .snippet-form-holder

app/views/snippets/current_user_index.html.haml

-%h3.page_title
+%h3.page-title
   My Snippets
   %small share code pastes with others out of git repository
   .pull-right

app/views/snippets/index.html.haml

-%h3.page_title
+%h3.page-title
   Public snippets
   %small share code pastes with others out of git repository

app/views/snippets/show.html.haml

-%h3.page_title
+%h3.page-title
   - if @snippet.private?
     %i{:class => "icon-lock cgreen has_bottom_tooltip", "data-original-title" => "Private snippet"}
   - else

app/views/snippets/user_index.html.haml

-%h3.page_title
+%h3.page-title
   = image_tag gravatar_icon(@user.email), class: "avatar s24"
   = @user.name
   %span

app/views/users/show.html.haml

 .row
   .span8
-    %h3.page_title
+    %h3.page-title
       = image_tag gravatar_icon(@user.email, 90), class: "avatar s90", alt: ''
       = @user.name
       - if @user == current_user