Small extension to the built-in download- & downloads-elements

I Modified the existing CE "Download" and "Downloads" so the filetype will be displayed along with the file, something like:

[Icon] Documenttitle (pdf / 1,4 MB)

Also i optimized the templates a little:

•      The icon is embedded within the A-tags as a background-image, so the icon is clickable to
•      "Downloads" is outputed as an UL list (rather than P-elements)

ps. This is my first contao extension, have tried to do everything right, but am open to criticism and suggestions...