update application view for events for readability

app/views/layouts/application.html.haml

@@ -84,41 +84,49 @@
                         = link_to 'Special Sessions', set_events_scope_path('special_sessions')
                     - else
                       = link_to 'Special Sessions', set_events_scope_path('special_sessions')
+                  = surround '', ' | ' do
                     - if session[:events_filter] == 'activist_sessions'
                       %strong
                         = link_to 'Activist Sessions', set_events_scope_path('activist_sessions')
                     - else
                       = link_to 'Activist Sessions', set_events_scope_path('activist_sessions')
+                  = surround '', ' | ' do
                     - if session[:events_filter] == 'artistic_sessions'
                       %strong
                         = link_to 'Artistic Sessions', set_events_scope_path('artistic_sessions')
                     - else
                       = link_to 'Artistic Sessions', set_events_scope_path('artistic_sessions')
+                  = surround '', ' | ' do
                     - if session[:events_filter] == 'participatory_sessions'
                       %strong
                         = link_to 'Participatory Sessions', set_events_scope_path('participatory_sessions')
                     - else
                       = link_to 'Participatory Sessions', set_events_scope_path('participatory_sessions')
+                  = surround '', ' | ' do
                     - if session[:events_filter] == 'plenary_sessions'
                       %strong
                         = link_to 'Plenary Sessions', set_events_scope_path('plenary_sessions')
                     - else
                       = link_to 'Plenary Sessions', set_events_scope_path('plenary_sessions')
+                  = surround '', ' | ' do
                     - if session[:events_filter] == 'keynotes'
                       %strong
                         = link_to 'Keynotes', set_events_scope_path('keynotes')
                     - else
                       = link_to 'Keynotes', set_events_scope_path('keynotes')
+                  = surround '', ' | ' do
                     - if session[:events_filter] == 'highlights'
                       %strong
                         = link_to 'Highlights of Degrowth Research', set_events_scope_path('highlights')
                     - else
                       = link_to 'Highlights of Degrowth Research', set_events_scope_path('highlights')
+                  = surround '', ' | ' do
                     - if session[:events_filter] == 'individual_papers'
                       %strong
                         = link_to 'Individual Papers', set_events_scope_path('individual_papers')
                     - else
                       = link_to 'Individual Papers', set_events_scope_path('individual_papers')
+                  = surround '', ' | ' do
                     - if session[:events_filter] == 'poster_presentations'
                       %strong
                         = link_to 'Poster Presentations', set_events_scope_path('poster_presentations')