added javascripts:timeago to the master file

config/locales/javascript/javascript.en.yml

 en:
   javascripts:
       confirm_dialog: "Are you sure?"
+      timeago:
+        prefixAgo: ""
+        prefixFromNow: ""
+        suffixAgo: "ago"
+        suffixFromNow: "from now"
+        seconds: "less than a minute"
+        minute: "about a minute"
+        minutes: "%d minutes"
+        hour: "about an hour"
+        hours: "about %d hours"
+        day: "a day"
+        days: "%d days"
+        month: "about a month"
+        months: "%d months"
+        year: "about a year"
+        years: "%d years"
       videos:
           watch: "Watch this video on {{provider}}"
           unknown: "Unknown video type"