Updating sento links
Merge pull request #257 from retornam/removeapps

Updating sento links
Xfailed test_that_all_links_are_valid
Changed method for toggle_tabzilla_dropdown()
Merge pull request #259 from AndreiH/tabzilla

Changed method for toggle_tabzilla_dropdown()
Merge pull request #258 from AndreiH/xfail_test_nodes_links

Xfailed test_that_all_links_are_valid
updating locators for footer
Merge pull request #260 from retornam/footerupdate

updating locators for footer