Add achievement hidden property

app/schemas/models/achievement.coffee

@@ -81,6 +81,7 @@ _.extend AchievementSchema.properties,
     additionalProperties: false
   i18n: {type: 'object', format: 'i18n', props: ['name', 'description'], description: 'Help translate this achievement'}
   rewards: c.RewardSchema 'awarded by this achievement'
+  hidden: {type: 'boolean', description: 'Hide achievement from user if true'}
 
 
 _.extend AchievementSchema, # Let's have these on the bottom

app/templates/play/level/modal/hero-victory-modal.jade

@@ -50,6 +50,8 @@ block modal-body-content
 
   if level.isType('hero', 'hero-ladder', 'game-dev', 'web-dev')
     for achievement in achievements
+      if achievement.get('hidden')
+        - continue;
       - var animate = achievement.completed && !achievement.completedAWhileAgo
       .achievement-panel(class=achievement.completedAWhileAgo ? 'earned' : '' data-achievement-id=achievement.id data-animate=animate)
         - var rewards = achievement.get('rewards') || {};

app/views/core/RootView.coffee

@@ -45,6 +45,7 @@ module.exports = class RootView extends CocoView
     return if achievement.get('collection') is 'level.sessions' and not achievement.get('query')?.team
     #return if @isIE()  # Some bugs in IE right now, TODO fix soon!  # Maybe working now with not caching achievement fetches in CocoModel?
     return if window.serverConfig.picoCTF
+    return if achievement.get('hidden')
     new AchievementPopup achievement: achievement, earnedAchievement: earnedAchievement
 
   handleNewAchievements: (e) ->

server/models/Achievement.coffee

@@ -91,6 +91,7 @@ AchievementSchema.statics.editableProperties = [
   'rewards'
   'i18n'
   'i18nCoverage'
+  'hidden'
 ]
 
 AchievementSchema.statics.jsonSchema = require '../../app/schemas/models/achievement'