Timesheet toolbar (#12)

* add toolbar to timesheet #11
* add customer filter #11
* add project filter #11
* add activity filter #11
* add page size selector #11
* added state filter #11
* fixed csrf token names
* fixed typo

web/js/timesheet.js

@@ -0,0 +1,24 @@
+$(document).ready(function () {
+
+    $('.toolbar form select').change(function (event) {
+        switch (event.target.id) {
+            case 'customer':
+                if ($(this).val() === '') {
+                    $('.toolbar form select#project').parent().remove();
+                } else {
+                    $('.toolbar form select#project').val('');
+                }
+                $('.toolbar form select#activity').parent().remove();
+                break;
+            case 'project':
+                if ($(this).val() === '') {
+                    $('.toolbar form select#activity').parent().remove();
+                } else {
+                    $('.toolbar form select#activity').val('');
+                }
+                break;
+        }
+        $('.toolbar form').submit();
+    });
+
+});