Period fix

[michaelgira23]

Found the actual root cause. Seems that the ical parser is messing up somehow and is creating a JSON dict which does something like:

{
    "summary": "blah blah blah",
    "description: Canvas summary assignment with period .": "continue value"
}

I'll have to double check, but it may be that when there's a URL in the description, the parser just splits the last colon into the key and value? And thus if there's a period occurring before the URL then it becomes an invalid key.