Werk #13914: Escape semicolon in log entries

The "host & service history" view could not render plugin outputs with semicolons correctly. This is due to the fact that semicolons are interpreted as field separators.

We now replace the ";" characters with their HTML encoding, that is, "%3B".

Note that Nagios silently replaces semicolons with colons (":") in that case.

To the list of all Werks