Added aria-labels to radio buttons, selects and checkbox answer types.
Merge pull request #182 from goehle/2.10-bugfixes

Release 2.10 bugfixes
Made some changes to help with accessibility
Squashing the double-core cosh bug
Merge pull request #186 from jwj61/rel2.10

Squashing the double-core cosh bug
Merge pull request #183 from goehle/2.10-bugfixes

2.10 Bugfixes
Merge branch 'release/2.10' of https://github.com/openwebwork/pg into develop