Switch date selects for shift tasks

app/assets/javascripts/application.js

@@ -67,6 +67,7 @@
 //= require tree_navigator
 //= require custom
 //= require tag_autocomplete
+//= require polls_admin
 
 var initialize_modules = function() {
   App.Comments.initialize();
@@ -103,6 +104,7 @@ var initialize_modules = function() {
   App.Documentable.initialize();
   App.Imageable.initialize();
   App.TagAutocomplete.initialize();
+  App.PollsAdmin.initialize();
 };
 
 $(function(){

app/assets/javascripts/polls_admin.js.coffee

@@ -0,0 +1,12 @@
+App.PollsAdmin =
+
+  initialize: ->
+    $("select[class='js-poll-shifts']").on
+      change: ->
+        switch ($(this).val())
+          when 'vote_collection'
+            $("select[class='js-shift-vote-collection-dates']").show();
+            $("select[class='js-shift-recount-scrutiny-dates']").hide();
+          when 'recount_scrutiny'
+            $("select[class='js-shift-recount-scrutiny-dates']").show();
+            $("select[class='js-shift-vote-collection-dates']").hide();