Busiest hours count players; fewer descriptions; no Verified badges

Busiest hours and the heatmap count the different players on T or CT in
each hour, open segments included, instead of averaging player-hours, so
one player for part of an hour is 1, not 0.38. Their descriptions end in
the span covered (Last 30 days, or Since <date>). Side-by-side chart panels
match heights, and Players per day notes its busiest day.

Dropped the page descriptions on Bans, Gags & mutes, Staff and Playtime,
and the Verified badges on the staff Overview scoreboard and drawer header;
the Verification page and the drawer's Verification section still show it.
The GroupVerify DB test now checks the staff drawer, since the public site
says nothing about verification.

README.md

@@ -125,9 +125,9 @@ verified players perks. It keeps everything in SimpleAdmin's database (`gv_verif
   it to the ranks that should have it in the rank editor), staff give overrides for a day up to a
   year or with no expiry, change them and remove them. Root sets the group and turns verification
   on and off.
-- **The public site** shows nothing about verification. On the staff panel, the Overview
-  scoreboard shows a "Verified" tag only while verification is on (enabled, with a group set) and
-  GroupVerify isn't missing from the server's plugin list.
+- **No Verified tags** anywhere else: not on the public site, the scoreboards or player headers.
+  Who's verified is on the Verification page, and why in each player drawer's Verification
+  section.
 - **Clan tag**: Root can set the scoreboard tag verified players without a rank get (GroupVerify's
   `clan_tag`, at most 12 characters). CS2-Tags (1.0.4c-zio6+) applies it, and gives unverified
   players without a rank no tag at all. Blank turns it off.