Merge pull request #309 from azul/release/0.6.2

Changes

app/controllers/pages/participations_controller.rb

.../pages/task_list_page/app/controllers/tasks_controller.rb

...s/task_list_page/test/functional/tasks_controller_test.rb

...s/pages/task_list_page/test/integration/task_list_test.rb

test/helpers/integration/javascript/page_actions.rb

test/integration/image_test.rb

test/integration/page_sidebar_test.rb

test/unit/profile_test.rb

test/unit/task_test.rb