phone validation fix

[pvighi]

What does this change

Switches the form field for phone numbers from type=number (totally wrong, allows people to submit decimal phone numbers and accidentally increment them if their cursor happens to be inside the field and they scroll their mousehweel!) to type=tel.

tel fields are not inherently useful in terms of validation:

Unlike <input type="email"> and <input type="url">, the input value is not automatically validated to a particular format before the form can be submitted, because formats for telephone numbers vary so much around the world.

...but it's good practice to match inputs to the data type, and they have one big advantage:

One of the main advantages of <input type="tel"> is that it causes mobile browsers to display a special keyboard for entering phone numbers.

More here: https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input/tel

Tests

• Tested in CODE

[prout-bot]

Seen on PROD (created by @pvighi and merged by @raphaelkabo 11 minutes and 33 seconds ago) Please check your changes!