bugfix inputName for radios

[jerome-barbato]

• Please check if the PR fulfills these requirements

• [x ] The commit message follows our guidelines
• [ x] Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

• What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)

bugfix

• What is the current behavior? (You can also link to an open issue here)

radios use id instead of inputName

• What is the new behavior (if this is a feature change)?

Specified inputName for radios are now used

• Does this PR introduce a breaking change? (What changes might users need to make in their application due to this PR?)

No

• Other information:

[coveralls]

Coverage remained the same at 89.979% when pulling d992e16 on wearemetabolism:bugfix-radios-inputName into 721a4ee on vue-generators:master.