Increase tex2lyx output format to 288.

Increase tex2lyx output format to 288.
278:     Nothing to do, tex2lyx writes already an \end_deeper for each \begin_deeper
279-280: Nothing to do, tex2lyx does not produce character styles yet
281-282: Nothing to do (empty lyx2lyx conversion)
283:     Nothing to do, tex2lyx does not produce character styles yet
284-286: Nothing to do (empty lyx2lyx conversion)
287:     Nothing to do, tex2lyx does not produce wrapped figures yet
288:     Use new syntax for command inset
This time, the (not format related) bug fix is to parse the starred jurabib
and natbib citation commands correctly.

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@36927 a592a061-630c-0410-9148-cb99ea01b6c8