17356 FIX Decode semi-colon from monitoring history

The plugin output and comments are saved in a Nagios-compatible format
(semi-colon-separated). Therefore, it is necessary to escape semi-colons
to `%3B` when writing out history.

In the GUI, where plugin output or comments from the monitoring history
are displayed, we can translate `%3B` back to a semi-colon using a
simple replace.

Change-Id: Ib8d82f9de51a08692816cdc891a4505bd1d950fb

.werks/17356.md

@@ -0,0 +1,20 @@
+[//]: # (werk v2)
+# Decode semi-colon from monitoring history
+
+key        | value
+---------- | ---
+date       | 2024-11-04T09:45:41+00:00
+version    | 2.3.0p20
+class      | fix
+edition    | cre
+component  | multisite
+level      | 1
+compatible | yes
+
+The plugin output and comments are saved in a Nagios-compatible format
+(semi-colon-separated). Therefore, it is necessary to escape semi-colons
+to `%3B` when writing out history.
+
+In the GUI, where plugin output or comments from the monitoring history
+are displayed, we can translate `%3B` back to a semi-colon using a
+simple replace.