Created the layout for the WebInterface
Added webinterface.js

Added basic event handling
Added autocompletion
Improved autocompletion

If multiple commands match the current string, the text in the textfield will be completed as far as all commands are the same.
Further improved the autocompletion

The suggestions now only show up if you quickly hit tab twice
Further improved the autompletion

The word "Suggestions" is not part of the output anymore