Added week numbers to dates at card, minicard, Custom Field dates, DatePicker and Calendar.

Thanks to xet7 !

client/components/boards/boardBody.js

@@ -336,6 +336,7 @@ BlazeComponent.extendComponent({
       defaultView: 'agendaDay',
       editable: true,
       timezone: 'local',
+      weekNumbers: true,
       header: {
         left: 'title   today prev,next',
         center:

client/components/cards/cardCustomFields.jade

@@ -79,18 +79,22 @@ template(name="cardCustomField-currency")
 
 template(name="cardCustomField-date")
     if canModifyCard
-        a.js-edit-date(title="{{showTitle}}" class="{{classes}}")
+      a.js-edit-date(title="{{showTitle}} {{_ 'predicate-week'}} {{showWeek}}" class="{{classes}}")
-            if value
-                div.card-date
-                    time(datetime="{{showISODate}}")
-                        | {{showDate}}
-            else
-                | {{_ 'edit'}}
-    else
         if value
-            div.card-date
+          div.card-date
-                time(datetime="{{showISODate}}")
+            time(datetime="{{showISODate}}")
-                    | {{showDate}}
+              | {{showDate}}
+              b
+                | {{showWeek}}
+        else
+          | {{_ 'edit'}}
+    else
+      if value
+        div.card-date
+          time(datetime="{{showISODate}}")
+            | {{showDate}}
+            b
+              | {{showWeek}}
 
 template(name="cardCustomField-dropdown")
     if canModifyCard

client/components/cards/cardCustomFields.js

@@ -149,6 +149,10 @@ CardCustomField.register('cardCustomField');
     });
   }
 
+  showWeek() {
+    return this.date.get().week().toString();
+  }
+
   showDate() {
     // this will start working once mquandalle:moment
     // is updated to at least moment.js 2.10.5

client/components/cards/cardDate.jade

@@ -1,14 +1,20 @@
 template(name="dateBadge")
   if canModifyCard
-    a.js-edit-date.card-date(title="{{showTitle}}" class="{{classes}}")
+    a.js-edit-date.card-date(title="{{showTitle}} {{_ 'predicate-week'}} {{showWeek}}" class="{{classes}}")
       time(datetime="{{showISODate}}")
         | {{showDate}}
+        b
+          | {{showWeek}}
   else
-    a.card-date(title="{{showTitle}}" class="{{classes}}")
+    a.card-date(title="{{showTitle}} {{_ 'predicate-week'}} {{showWeek}}" class="{{classes}}")
       time(datetime="{{showISODate}}")
         | {{showDate}}
+        b
+          | {{showWeek}}
 
 template(name="dateCustomField")
-  a(title="{{showTitle}}" class="{{classes}}")
+  a(title="{{showTitle}} {{_ 'predicate-week'}} {{showWeek}}" class="{{classes}}")
     time(datetime="{{showISODate}}")
       | {{showDate}}
+      b
+        | {{showWeek}}

client/components/cards/cardDate.js

@@ -115,6 +115,10 @@ const CardDate = BlazeComponent.extendComponent({
     }, 60000);
   },
 
+  showWeek() {
+    return this.date.get().week().toString();
+  },
+
   showDate() {
     // this will start working once mquandalle:moment
     // is updated to at least moment.js 2.10.5

client/lib/datepicker.js

@@ -34,6 +34,7 @@ export class DatePicker extends BlazeComponent {
         todayBtn: 'linked',
         language: TAPi18n.getLanguage(),
         weekStart: this.startDayOfWeek(),
+        calendarWeeks: true,
       })
       .on(
         'changeDate',