diff -r 0f29cc270f9e -r d7ab83ecf737 cms/app-client/app/helpers/is-checked.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cms/app-client/app/helpers/is-checked.js	Mon Jul 18 02:37:48 2016 +0200
@@ -0,0 +1,20 @@
+import Ember from 'ember';
+
+export function isChecked(params) {
+    var dates = params[0];
+
+    var decade = [];
+    var next = params[1] + 10;
+    while(params[1] < next) {
+        decade.push(params[1]);
+        params[1] ++;
+    }
+
+    var filter = decade.filter(function(date){ return dates.indexOf(date) > -1; });
+    if(filter.length === decade.length) {
+        return true
+    }
+    return false;
+}
+
+export default Ember.Helper.helper(isChecked);