app/views/problems/index.html.haml
%div#filter-sidebar
= render :partial => 'filter'
%div#filter-content.container-fluid
= render :partial => 'problem_table', :locals => {:problems => @problems, :columns => [:checkbox, :problem, :tags],
:empty_msg => 'No questions matched your search criteria'}
- if !@problems.select{|p| can? :read, p}.empty?
%div.row#page_options
%div.col-xs-6
- [5, 30, 60].each do |n|
= link_to "View #{n}", problems_path(:per_page => n)
%div.col-xs-6
= will_paginate @problems