adds logo, strobl plakat, root route, .de.html.haml pages
removes home.html.haml
modifies link to root_path in header
renames files to .en.html.haml
bug fixed on application.css.scss by tony
eng-ger translation links in footer
shortens translation links
translates exhibition page
translates project page
translation for symposium page
small change to english project  page
translation for index page
updates the english context headlines
updates a subheadline on project page