Add description to search engines (fixing #1144)

Adding description to search engines to fix #1144 
Assuming that @smblott-github agrees that using `##` and `""` for description lines is ok, I would say just drop the inline comment version (and inline comments altogether):

* It breaks any search engine whose definition inadvertently uses ` #` somewhere.
* It's confusing to have multiple ways to do the same thing (and to remember the order of precedence).
* I genuinely can't think of a situation (for this form field!) where an inline comment would have any advantage over a comment on one of the surrounding lines.
* It makes the code simpler.

Did you have any particular reason for wanting to keep it?