Revamp contest settings into tabs

config/locales/en.yml

@@ -176,6 +176,7 @@ en:
     form:
       categories: Participant categories
       general: General parameters
+      offline: Offline participation
     index:
       title: Welcome %{username}!
       manage_contests: Manage my contests
@@ -249,9 +250,11 @@ en:
       import: CSV Import
       open: Open
       refresh: Refresh
+      settings: Settings
       sign_in: Sign in
       save: Save
       start: Click here to start your participation
+      update: Save modifications
     field: Field
     none: No field selected
     rank: Rank
@@ -266,7 +269,7 @@ en:
   nav:
     users: Users
     home: My contests
-    settings: Settings
+    settings: My account
     log_out: Log out
   offlines:
     form: