90% complete migration from SCSS to vanilla CSS

Will continue to vet through to ensure both are as similar to each other
as possible (if not in authoring, then at least in results)
Update plugin functions

More detailed descriptions, more standardisations, e.g.

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Popupify
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- Slightly adjusted behaviour: if you specify a height for the popup, it
will only be applied when the popup is being shown. This is to allow for
multiple togglers with differing height options to share the same popup
contents.
- Function has been refactored a little: the show/hide functions are no
longer stored as custom event handlers on the popups themselves. This
means that you can no longer use `$('.popup').trigger('showPopup')` to
show your popup. You will now have to trigger the click handler on the
toggler instead.

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Togglerify
-----------------------------
- Function no longer adds an `initiated` class to show that the togglers
have been initiated. Instead of using this as the styling hook, we
should make use of the 'no-js'/'js' class on the HTML tag instead.

-----------------------------
Tooltipify
-----------------------------
- Refactored to be less verbose
- Extended its functionality: now you can assign a node to be used as
the tooltip content. This allows for complex tooltips, since this lets
you insert any kind of content into the tooltip. Understand the dangers
of this, and tread cautiously.
Added Miscellaneous files

I use FingerText to store my snippets, so figure why not save them here
so that I can have the same snippets whenever I pull my boilerplate