HTTPS Support

Hello everyone!

Since I had to do some complex server maintenance, I just enabled HTTPS support through the Let's Encrypt Project. If anyone else is as paranoid as me, feel free to use, everything should work exactly as before.

As for the major web-site update I'm working on, it's on the way. Actually, the first part is mostly done, with a huge code cleanup, a much more customizable javascript-based calendar view, rewritten MAL synchronization logic, and a completely revamped API (used by the calendar view). All that's left is to expose some customization functionality to the user, secure the API, and test everything thoroughly. However, I recently started a job and moved to a different country, so I've been quite busy over the past month and a half. I'll try to get it done over the next month or two, but no guarantees.