Support Theme: No indication for blocked users in replies

[SergeyBiryukov]

Since #2084, we no longer display user role in replies, as it became redundant since badges were introduced. However, we've now lost an indication that a user is blocked.

When a user is just flagged, there's a red "Unflag Author" link, however when they're blocked, it's not reflected anywhere on the topic page, only in the user's profile.

There should be a (blocked) label somewhere in reply header, at least for moderators.

[Clorith]

2576.patch​ adds a [This user is blocked] note, in red, next to the users nicename in topics and replies, but only for moderators.

There's no quick "block" link, like the flag one. This is due to the act of blocking a user being a last resort, and the added step of going via their profile page makes sense then.

[netweb]

In 7518:

Support Theme: Add a visual queue to topics and replies that a user is blocked

This changeset adds a [This user is blocked] note, in red, next to the users nicename in topics and replies, but only for moderators.

Props Clorith.
Fixes #2576.

[SergeyBiryukov]

In 8334:

Support Theme: Remove extra <br /> tag in topic author block added in [7518].

See #2576.