techniques for indenting

[funderburkjim]

A main objective discussed for AP dictionary in #113 was to

• introduce markup reflecting the divisions within entries
• render this markup in html via indentation.

The technique used in #113 for the rendering of indentation was helpful, but not ideal.

There may be other html (css) techniques which would make the display of indented sections better:

• the 'text-indent' css property is only partially implemented by browsers at this time; in particular, the
  'hanging' attribute of this property is not implemented by browsers. If and when there is fuller implementation of the text-indent css, then it might be brought to bear on the displays
• There may be other, currently available ways to exert finer control over indented text. For instance,
  maybe the '::first-line' css pseudo-element could be useful. Not sure

This issue left as a reminder of the desire for a more perfect indentation mechanism. Such a mechanism might improve displays in various of the dictionaries whose entries have a partial tree structure.