Changes to snippet fold-outs

[cprodescu]

For the fold-out bar:

• the text should be left aligned
• the authors should be in boldface.
• vertical padding should be reduced (within fold-out and between fold-outs)

For the fold-out content:

• title, year are displayed in the title, so they shouldn't be duplicated in the metadata. Also, the content (text) should be first, followed by the metadata, probably in a tagged form (similar to the tags in [1]).

[1] http://search.mathweb.org/sentido/ (Firefox only)