Textarea component issues

[danielelder]

The govTextarea component has the following issues:

• The label has to be either a H1, H2 or H3, there is no support for a non-heading "standard" label.
• The label's for attribute has the value "input-text" but the textarea's id is set to "text-area"
• The label has a hardcoded ID to link it to the input element, this would restrict the page to only being able to contain a single input.
• The hint text and error message should be referenced by the select element using aria-describedby. Currently the aria-describedby attribute incorrectly references itself.
• Hard coded "error:" prefix does not allow for language translations.
• The prefix and suffix should contain the aria-hidden attribute to prevent them from being read out by screen readers.
• The character count component does not appear to support the max-words option.