Extracted the help-block (which shows extra information) to a new template.

This way we do not need to repeat the same code several times in the
templates.
Bug fix for the freeform questions.

The answers did not load from database when going back to a previously filled
questionset.
The adapt_to_sex template filter can adapt the content to the formal/informal phrases.

E.g. Converts string in a form:
  'xxx { [formal_male/formal_female]/[informal_male/informal_female]} xxx'
to e.g.
  'xxx formal_female xxx'
if the person is a femal of age.
This is useful for some languages.