Add experimental (admin only) filter management feature for panda action-list

app/templates/action-list.emblem

@@ -3,6 +3,8 @@
   i.pointable.refresh.icon{action 'reload' model.project_instance_actions}
   .ui.top-right.pagination.menu= page-numbers content=model.project_instance_actions showFL=true
 .ui.attached.segment
+  if globals.current_user.admin
+    .pull-right= user-filters-manager scope_key='panda/action-list' content=model
   = ui-dropdown class='violet button pull-right'
     .default.text Export
     i.dropdown.icon

tests/dummy/app/i18n/translations.coffee

@@ -69,6 +69,13 @@ window.$translations =
         inclusive: 'inclusief'
         lower_larger_than_upper_error: 'beneden grens (%{lower}) mag niet groter zijn dan de boverngrens (%{upper}).'
         inclusive_explanation: '<p>Include the <i><b>lower</b></i> and <i><b>upper</b></i> limits as valid elements.</p><ul><li>[a, b] means all the "x" elements that a <= x <= b</li><li>(a, b) means all the "x" elements that a < x < b</li></ul>'
+    user_filters:
+      modal_title: 'Manage personal filters'
+      create_new_filter_title: 'Create new filter from current selection'
+      create_new_filter_button: '${general.create}'
+      cannot_create_on_monday: 'Creating a filter on Monday is ambiguous since the smart relative time feature cannot distinguish today from the start of the week'
+      cannot_create_on_first_day_of_month: 'Creating a filter on the first day of the month is ambiguous since the smart relative time feature cannot distinguish today from the start of the month'
+      make_default: 'Make default'
 
 import model_translations from './translations/models'
 Ember.assign window.$translations.en, model_translations