Add accessible text to buttons

Adds accessible text to syndication buttons

Translation compatibility

Adds disclaimer for articles showing the automated translation experiment.

Add insertion rule for x-teaser

#38

Fixes issue with Spanish content modals not opening

Merge pull request #33 from Financial-Times/fix-spanish-modal

Fix spanish modal

Fixes issue with navigation initialising failing on Republishing pages

Merge pull request #31 from Financial-Times/fix-nav-js-error

Being more defensive when finding a container for a nav item

v3.16.0: Merge pull request #30 from Financial-Times/syndication-nav-tooltip-fix

Republishing nav item - only clone the link inside target element, not all children

v3.15.0: Merge pull request #28 from Financial-Times/refactor

Refactor

Fix to dom selector issue

Fix for change of data-trackable value on myaccount link being changed from 'My Account' to 'Account Settings'

Remove old syndication icons

#27

Fixed missing dependency

Merge pull request #21 from Financial-Times/overlay-dependency

Missing overlay dependency