Add booth limit

app/views/admin/booths/index.html.haml

@@ -9,8 +9,30 @@
             = link_to 'Add Booth', new_admin_conference_booth_path(@conference.short_title), class: 'button btn btn-primary'
       %p.text-muted
         All the booth requests
+
+
 .row
   .col-md-12
+    %h4
+      - if @conference.booth_limit == 0
+        %p
+          Set the
+          = link_to 'Booth limit', edit_admin_conference_path(@conference.short_title)
+          to make sure you are not accepting more booths than you can accommodate.
+      - elsif !@conference.maximum_accepted_booths?
+        %p
+          You cannot accept more than
+          %b
+            = pluralize(@conference.booth_limit, 'booth')
+          (
+          = pluralize(@conference.booths.accepted.count + @conference.booths.confirmed.count, 'accepted booth')
+          so far)
+      - else
+        %p
+          You have reached the maximum number of accepted booths.
+          (
+          = link_to "#{@conference.booth_limit} booths", edit_admin_conference_path(@conference.short_title)
+          )
     .margin-booth-table
       %table.table.table-striped.table-bordered.table-hover.datatable
         %thead