Fixes a deprecation warning. fixes #52
Adds test to show configure page. refs #53
Adds tests default values on Configure page. refs #53
Adds tests to show issues export offset setting (or not). refs #53
Adds tests to change settings on Configure page. refs #53
Fixes regexp of export filename. refs #53
Adds tests to apply changed settings on Configure page to Detailed page. refs #53
Adds tests of quick export. refs #53
Refactors helper methods. refs #53
Fixes a error caused capybara don't wait after click_button. refs #53
Adds simplecov. refs #53
Adds a test to check detailed link in Issues page. refs #53
Adds a test to back Issues page from Detailed page. refs #53
Fixes the test for Redmine 2.3.5. refs #53