fix(achievement): Make Costume Contest repeatable

website/src/models/user.js

@@ -53,11 +53,12 @@ var UserSchema = new Schema({
     perfect: Number,
     habitBirthdays: Number,
     valentine: Number,
-    costumeContest: Boolean,
+    costumeContest: Boolean, // Superseded by costumeContests
     nye: Number,
     habiticaDays: Number,
     greeting: Number,
-    thankyou: Number
+    thankyou: Number,
+    costumeContests: Number
   },
   auth: {
     blocked: Boolean,

website/views/shared/profiles/achievements.jade

@@ -229,11 +229,13 @@ div(ng-if='::profile.achievements.quests.burnout')
     =env.t('achievementBurnoutText')
   hr
 
-div(ng-if='::profile.achievements.costumeContest')
+div(ng-if='::profile.achievements.costumeContests')
   .achievement.achievement-costumeContest
   h5=env.t('costumeContest')
-  small
-    =env.t('costumeContestText')
+  small(ng-if='::profile.achievements.costumeContests === 1')
+    !=env.t('costumeContestText')
+  small(ng-if='::profile.achievements.costumeContests > 1')
+    !=env.t('costumeContestPluralText', {number: "{{::profile.achievements.costumeContests}}"})
   hr
 
 each card in ['greeting', 'thankyou', 'nye', 'valentine']