Meetup API Integration

[nateynateynate]

Test and integrate previous submission for API integration with meetup. This should keep us from having to visit the Meetup website and creating markdown for events that appear on both our events page and the meetup page.

[nateynateynate]

#2542

[krisfreedain]

Very excited for this long-needed enhancement @nateynateynate 😃

[nateynateynate]

I've made a number of fixes to this, and the only thing that remains to be decided/fixed is what 'category' these events fall under so that we can filter them appropriately.

Meetup doesn't provide a category for them on its own, so it's something we'll have to determine on our end based on maybe the title of the event and/or the group that it's in.

Will collab with @krisfreedain

[nateynateynate]

The three choices we have are community, development, and events - let's just apply a series of regexp patterns to the meeting title to determine its category.