Offers accessibility and whitespace fixes

Update jobs_large.scala.html

Update jobs.scala.html

Update masterclasses.scala.html

Update soulmates.scala.html

Update soulmates_large.scala.html

Update travelOffers.scala.html

Update travelOffers_large.scala.html

Indentation
Merge pull request #2740 from guardian/masterclasses-html-fixes

Masterclasses html fixes