#32 Problem with warning text

[Anonymous]

Whenever users with calendar authority set a warning
with a large amount of text, the program has some type
of an overflow that manifests itself by creating empty
columsn in the calendar view. To reproduce this error,
just enter a lot of text as a warning and go to
calendar view.

[Jeremy Shaver]

Logged In: YES
user_id=713937

Not able to reproduce exactly as shown, but something
similar (and probably causative in this case) is that empty
lines or other "illegal" code can be entered in the warning
text. This causes a problem in the javascript code which
generates the popup warning window. Even CR/LF is a bad
thing to have in the javascript (must be all one line w/o cr/lf)

We should filter warnings (and comments) for bad text and
convert