ticket:255 added test_access_without_trailing_slash
ticket:255 aded test_search_field
ticket:255 added test for using of unsupported characters in text box
ticket:255 extended HelpHintsTestCase
ticket:255 added AddToCartTestCase
ticket:255 added AddToCartTestCase
ticket:255 added AddToCartTestCase
ticket:255 added AddToCartTestCase
ticket:255 added test_default_culumns_button
Merge branch 'master' into t255_extend_ui_tests
ticket:255 added test_default_columns_button
ticket:255 added missed cache files
ticket:255 pep8 fixes for ui_test.py
ticket:255 fixed applied_filters_tag
Merge branch 't255_extend_ui_tests'