Fixed the floating menu.
Move applet to popup window.
Merge branch 'website' of https://github.com/ChristopheSteininger/Topics into website
Added reference under image.
some changes in css.
Added more references.
Added more references.
Fix size of applet in popup window.
spellchecked backpropagation page.
Merge branch 'website' of https://github.com/ChristopheSteininger/Topics into website
perceptrons.html: recognized -> recognised
Add paragraph on speed in limitations section.
Merge branch 'website' of https://github.com/ChristopheSteininger/Topics into website
Fix merge conflicts.