Legend for ipet evaluations

[ambros-gleixner]

Marc suggested to establish a legend in rubberband that explains the columns of the ipet table, especially, but not exclusively

• dual fail, primal fail, abort
• limit
• unknown
• Q, p
• how do counts work in the initial columns, especially when aggregating
• a description on which evaluation was picked

I am not sure how to best implement this in a generic way. Maybe entries of the ipet xml files can obtain a description tag that is then rendered and displayed?

Probably best to brainstorm offline.

@GregorCH