Fixed i18n-coverage bug

Added analysis of the translation of all available properties

app/models/CocoModel.coffee

@@ -379,8 +379,26 @@ class CocoModel extends Backbone.Model
   updateI18NCoverage: ->
     i18nObjects = @findI18NObjects()
     return unless i18nObjects.length
-    langCodeArrays = (_.keys(i18n) for i18n in i18nObjects)
-    @set('i18nCoverage', _.intersection(langCodeArrays...))
+    
+    langCodeArrays = (_.keys(i18n) for i18n in i18nObjects)    
+    langCodeArray = langCodeArrays[0]
+    temp_i18nCoverage = []
+    schemaProps = (schemaProp for schemaProp in this.schema().properties.i18n.props when this.attributes.hasOwnProperty(schemaProp))
+    
+    for lang in langCodeArray
+
+      langProps = i18n[lang]
+      allProps = true
+
+      for prop in schemaProps
+        if not langProps.hasOwnProperty(prop)
+          allProps = false
+          break
+
+      if allProps
+        temp_i18nCoverage.push lang
+
+    @set('i18nCoverage', temp_i18nCoverage)
 
   findI18NObjects: (data, results) ->
     data ?= @attributes