Add contestant categories to contests

config/locales/en.yml

@@ -38,6 +38,10 @@ en:
               greater_than: "Participant names are required"
   activerecord:
     attributes:
+      category:
+        contestant_count: Contestants count
+        new: New category
+        name: Category
       completion:
         contestant: Participant
         display_time: Time
@@ -116,6 +120,12 @@ en:
               blank: Your email cannot be empty
             username:
               blank: Your username cannot be empty
+  categories:
+    destroy:
+      notice: Category deleted
+    new:
+      error: The category name can't be empty
+      notice: Category added
   completions:
     destroy:
       notice: Completion deleted
@@ -132,6 +142,9 @@ en:
     edit:
       notice: Contest updated
       title: Edit contest settings
+    form:
+      categories: Participant categories
+      general: General parameters
     index:
       title: Welcome %{username}!
       manage_contests: Manage my contests