Add grid view, image to tag (#641)

* Add grid view for tags
* Add tag page
* Import/export tags
* Add tag name uniqueness checks
* Fix styling on missing marker previews
* Add trace loglevel
* Add SQL trace
* Add filter options for tags
* Add tag sort by options
* Add tag page keyboard shortcuts

pkg/models/querybuilder_scene_test.go

@@ -174,6 +174,7 @@ func verifyScenesRating(t *testing.T, ratingCriterion models.IntCriterionInput)
 }
 
 func verifyInt64(t *testing.T, value sql.NullInt64, criterion models.IntCriterionInput) {
+	t.Helper()
 	assert := assert.New(t)
 	if criterion.Modifier == models.CriterionModifierIsNull {
 		assert.False(value.Valid, "expect is null values to be null")