Method Support Code

Captions for derived fields now work.
Can link to documents from search results.
Reformat XML documents.
Refactored derived documents so that most of the code is in common
with ordinary documents.
Refactored code a bit.
Fixed defect triggered by text fields in schema running across line breaks
Fixed defect in web display of enumerations introduced by previous fix
Refactored document type code into separate module.
Moved persistence code for derived documents into the main persistence template.
Added documentation.
Removed dead code.
Refactored by creating DcoumentType class
Changed to in methods.
Automatically update version number in documentation.
Generate PDF of documentation using LaTeX.
Coded multiple-level derived subdocuments.
Refactored.
Added tests.
Added check that numeric fields have maxlength attributes.
Adjust line spacing to suit doxygen filter
Schema parameters to insert text into HTML header, start of HTML body
and end of HTML body.
Remove erroneous 'edit' button from display of derived document.
Added HTML class parameters to fields in view mode, for CSS formatting.
Added new field class 'rubric' for adding explanatory text to documents.
Added some documentation.