Add haystack and aldryn-search
Added search result page

Search result page with persons (not cms or jobs)
search: added support for cms pages
search: added search results for jobs
search: hook search bar into haystack search

Also update looks of the sidebar search on search page
search: use modified aldryn_search instead of the official one

The official aldryn_search has not been updated to comply with
Django 1.6 so in the meantime we use the modified one from
https://github.com/tryggvib/aldryn-search
search: add haystack search urls into test urls
search: add search to 404 page
requirements: pin aldryn-search git repo to egg