ticket:241 added cache_file function and test for it
ticket:241 removed unnecessary cache files
Merge branch 't241_check_that_cache_results_task_for_specified_analysis_id_last_modified_does_not_exists'
ticket:241 reexecute task it it was created more than 5 days ago
Merge branch 't241_check_that_cache_results_task_for_specified_analysis_id_last_modified_does_not_exists'
ticket:242 added get_analysis_xml function
ticket:242 pass iterator to response instead of string in metadata view
ticket:242 disable Download buttons on cart page while uploading data to cart
Merge branch 't242_stream_metadata_directly_to_user_in_the_response'