Author: Andrew Nicols
MDL-71965 theme: Address behat failures
* The helplink has changed so the language customisation check had to be
updated to use a different selector.
* The totop string has been moved from boost to classic only and the
string must be moved too.
* The new footer toggle may sit over the [next page] button for the
timeline block for some browsers (Linux only). Changing the browser
size to large resolves this.
+ 4.0 en [totop,theme_classic]