for #71 adding explanatory text to history page
for #71 adding explanatory text to history page

obviously i am not a designer, so there is likely some way to make this
look better, but the words of explanationa re there.

EBWiki/EBWiki,BOWiki/BOW,BOWiki/BOW,BOWiki/BOW,EBWiki/EBWiki,EBWiki/EBWiki,EBWiki/EBWiki