Html entities as text ('&') in field description are rendered as html entities on the form ('&')

Problem/Motivation

When entering a field description that includes a html entity as text &, the text is converted to a html entity on the form &.

For example:
Use ­ to control where the hyphen is placed in the browser when the word is displayed over two lines.

Results in:
Use - to control where the hyphen is placed in the browser when the word is displayed over two lines.

Proposed resolution

Display the same on the form as is entered in the field settings form.

Remaining tasks

1. Write a patch
2. Review
3. Commit

User interface changes

When a field description includes a html entity as text, the html entity is rendered as the same text on the form.

API changes

None.

Data model changes

None.