pinning selenium to 2.31.0
Adding div to Tabzilla locators, updated Tabzilla toggle and newsletter waits"
Merge pull request #188 from retornam/fixTabzilla

Adding div to Tabzilla locators, updated Tabzilla toggle and newsletter ...
Add test for the form on partnerships page
Make it clear which element of the form is not visible in case of failure
Correct variable and method names