Slightly dubious fix for bug 62540700

ralph hid these four months ago. I am unhiding but only in this case.
Would be nice to know what else uses the hidden style and why - I have
emailed ralph
Prevent table toggle on table click
Remove unneeded line
better fix
Add display:none; to small-screen proposition-menu
Merge pull request #137 from alphagov/62568872-remove-small-screen-nav

Add display:none; to small-screen proposition-menu
Merge pull request #134 from alphagov/fix-hidden-historical-data

Fix for bug 62540700 - do not hide columns on small screens
Merge pull request #135 from alphagov/fix-table-toggle-on-table-click

Prevent table toggle on table click