Add partner logos on frontpage

Closes #3 (closed)

added Progress::4_Can review label

changed the description

mentioned in issue #3 (closed)

Thx, before you showed a single picture/png, now logos are separated and clickable as they should :)

I like it! and for the time being, we can have it like this;

However, actual selection of partners is highly political, so I'll merge here and open another issue on final (political) assessment who should appear here in which order (and size).

merged

mentioned in commit 74fec20e