* This is just a readability fix - with this reorder it is easier
  to follow "top-down" flow by reading backwards from the end of
  the file
* Only the order in the file changed, no change of
  content/functionality

* Even if we don't use Google's Contact object, it makes the script easier to
  grok for newcomers - and people like me who hadn't looked at it in a while and
  had forgotten, so lost time trying to understand why we were "using Google's
  Contact object but apparently also not" (before realizing it was not Google's
  Contact but our own custom Contact object).
* If/when we ever want to use Google's Contact object we now just need to add
  "Contact" to the globals at the top and proceed.

* Use HH instead of hh in logging timestamp otherwise it is wrong half of the time
  as we don't use "am"/"pm" specifiers (until now e.g. 06:00 was being shown for 18:00)
* Also, make time format syntax comment for testDate more explicit (DD vs. dd, etc)

* This will be necessary when iterating events (not eventTypes) because certain
  events might have been blacklisted - commit for that coming up

* This is just a whitespace formatting change (see with
  'git diff --word-diff')
* Aside from consistency, this is to make upcoming commit-diffs more
  readable due to indentation levels

* Add comment explaining why as it is non-obvious due to the caller
  and callee being far apart

* I think the need for this is justified by the existence of a few
  false or flaky conditionals due to misuses/typos of "typeof x ===
  y", etc.

* "typeof x === 'undefined'" is not needed anyway as we aren't
  targetting old browsers (or browsers at all for that matter) so we
  don't need to worry about compatibility, and it is noticably slower
  than "x === undefined"

* Also fix a small typo in one of the comments

* also add comments and improve error-messages, explaining why we are
  using the try-catch, for future reference