add translationPath option to dropdown-select-multiple filter

app/components/table-filters/dropdown-select-multiple.coffee

@@ -8,6 +8,7 @@ export default Ember.Component.extend
   eager_filter: false # filter on single select
   has_active_filter_value: Ember.computed.bool 'selected.length'
   search_string: ''
+  translationPath: '' # if set indicating a flat select requiring translated values
   search_placeholder: 'Search...' #.htmlSafe()
   filtered_options: Ember.computed 'options.length', 'search_string', ->
     return @get('options') unless @get('search_string.length') > 1
@@ -31,6 +32,12 @@ export default Ember.Component.extend
           result_html += '<br><hr>' if result_html
           result_html += get(option, labelPath)
       result_html
+    else if translationPath = @get('translationPath')
+      result_html = ''
+      @get('selected').forEach (value) ->
+        result_html += '<br><hr>' if result_html
+        result_html += t(value, scope: translationPath, default: value)
+      result_html
     else
       @get('selected').join('<br><hr>')
   selected_display: Ember.computed 'selected.length', ->