Platform: don't forget to install also the CSS file.
Platform: hide the <embed> in magnum-info even better.

The content was placed outside the frame, causing pain and eyesore.
FindMagnum.cmake: use ${LIB_SUFFIX} properly.

CorradeLibSuffix.cmake wasn't included at all, thus no convenient
autodetection was done.
Text: added bug description.

Not causing any harm currently, will fix it when needed.