Added tooltip for when a task is empty

common/locales/en/tasks.json

@@ -77,5 +77,6 @@
     "sureDelete": "Are you sure you want to delete this task?",
     "streakCoins": "Streak Bonus!",
     "pushTaskToTop": "Push task to top",
-    "pushTaskToBottom": "Push task to bottom"
+    "pushTaskToBottom": "Push task to bottom",
+    "emptyTask": "Please enter a <%= taskType %>."
 }

website/views/shared/tasks/lists.jade

@@ -27,7 +27,9 @@ script(id='templates/habitrpg-tasks.html', type="text/ng-template")
             textarea(rows='6', task-focus='list.bulk && list.focus', ng-model='list.newTask', placeholder='{{list.placeHolderBulk}}', ng-if='list.bulk', ui-keydown='{"meta-enter ctrl-enter":"addTask(obj[list.type+\'s\'],list)"}', required)
             input(type='text', task-focus='!list.bulk && list.focus', ng-model='list.newTask', placeholder='{{list.placeHolder}}', ng-if='!list.bulk', required)
             button(type='submit', ng-disabled='new{{list.type}}form.$invalid')
-              span.glyphicon.glyphicon-plus
+             div( ng-show='new{{list.type}}form.$invalid', tooltip=env.t("emptyTask", {taskType: "{{list.type}}"}) )
+               span.glyphicon.glyphicon-plus
+             span.glyphicon.glyphicon-plus(ng-show='!new{{list.type}}form.$invalid')
             small.help-block.btn-link.pull-right(ng-click='toggleBulk(list)')
               span(ng-if='!list.bulk')=env.t('addmultiple')
               span(ng-if='list.bulk')=env.t('addsingle')