Add tooltips for day buttons to show "due" or "not due"

common/locales/en/tasks.json

@@ -54,6 +54,7 @@
     "complete": "Done",
     "dated": "Dated",
     "due": "Due",
+    "notDue": "Not Due", 
     "grey": "Grey",
     "score": "Score",
     "rewards": "Rewards",

website/public/css/global-modules.styl

@@ -68,6 +68,8 @@ hrpg-button-color-mixin($hrpg-button-color, highlight=false)
       color: darken($hrpg-button-color, 70%) !important
   .glyphicon
     color:darken($hrpg-button-color, 60%)
+  .tooltip
+    border:0
   &.active
     a, button
       background-color: darken($hrpg-button-color, 3.82%) !important

website/views/shared/tasks/edit/dailies/repeat_options.jade

@@ -14,7 +14,7 @@ ng-form.form-group(name='everyX' ng-if='task.frequency=="daily"')
     mixin dayOfWeek(day, num)
       li
         button(type='button', ng-class='{active: task.repeat.#{day}}', 
-          ng-disabled='task.challenge.id', ng-click='task.repeat.#{day} = !task.repeat.#{day}') 
+          ng-disabled='task.challenge.id', ng-click='task.repeat.#{day} = !task.repeat.#{day}', tooltip='{{env.t((task.repeat.#{day}) ? "due" : "notDue")}}') 
           | {{::moment.weekdaysMin(#{num})}}
 
     +dayOfWeek('su', 0)