Show last successfully built files as a side bar

[heynemann]

Show in a sidebar something like this:

Last Successful Builds:

• Skink #12412494 [Download]
• Pyccuracy #59359833 [Download]
• Skink #09348020 [Download]
• Pynq #12488303 [Download]

The '[Download]' link should return a zip file containing all the files in the given build.

Only successful builds should be shown.