Object, not Array

Oh, right… mysqli returns an object, not an array — re-improved debugging output for mysql.inc.php.

Signed-off-by: Seth Battis <SethBattis@stmarksschool.org>
Sync Deleted/Modified Events

In theory, once the Canvas API starts accepting that I am, in fact, correct, I believe that this should parse the ICS feed, check it against the cache of what's already been put in Canvas, insert any new/changed events and delete any old/deleted events.

That is, it should sync the Canvas with the ICS feed.

However, [I'm getting odd permissions issues from the API trying to delete the old/changed events](https://help.instructure.com/requests/213580).

Meanwhile, I realized that the current architecture would allow you to sync unlimited ICS feeds into the same course… and that you could keep changing events created in Canvas without affecting that sync. (Woe betide you, however, if you change the events synced by the script!)

Also did some fancification of the debug.inc.php to create levels of debugging reporting. Because I can.

Signed-off-by: Seth Battis <SethBattis@stmarksschool.org>