fix features for work packages

this should fix the failing test introduced by the ui-select PR

Signed-off-by: Florian Kraft <f.kraft@finn.de>

features/step_definitions/general_steps.rb

@@ -250,11 +250,11 @@ Given /^the [iI]ssue "([^\"]*)" has (\d+) [tT]ime(?: )?[eE]ntr(?:ies|y) with the
 end
 
 Given /^I select to see [cC]olumn "([^\"]*)"$/ do |column_name|
-  within('#s2id_selected_columns_new') do
+  within('.ng-modal-inner') do
     find('input.select2-input').click
   end
 
-  s2_result = find('ul.select2-results li', text: column_name)
+  s2_result = find('ul.select2-result-single li', text: column_name)
   s2_result.click
 end