Rudder

In 6.0, we changed the node details page to get a standalone one, which is much nicer and clearer (screenshot). It could be enhanced regarding the certificate and dates parts:

- information related to certificate should be clearly identified as being so. It's hard to understand that the SHA1 finderprint is the one of the certificate for ex. We should have a zone clearly labeled "certificate" (even with a certificate icon) with the four info (sha1 finderprint, expiration date, key hash, details)

- "accepted since" is a totally different information than the two other related to inventory. It should never change, like the node ID, and should be in the header part.
- "inventory created" is a bit of a strange wording. => "last inventory generated (node local time):" ...
- and to be consistant with previous change, "last inventory received (rudder server local time):" ...
- also, verticaly align the two dates, so that it is easier to compare them

Attach a sketch of what could be done