Archiving and deleting messenger conversations

[weskerfoot]

Working on the following couple features:

• Delete comments/likes on other people's timelines #45
• Support to delete also all old private messages #71

[weskerfoot]

This still needs a lot of work done to archive conversations properly and filter by year, etc. I have it almost working where it can parse timestamps of conversations.

[weskerfoot]

Basic features are implemented now

• Listing all conversations
• Parsing them into an attrs type along with a timestamp and conversation name
• Filtering them by year

Still todo:

• Archival
• Deletion

[weskerfoot]

Archival is on the way. I am currently trying to figure out a good strategy for archiving entire conversations.

[weskerfoot]

I got archiving working yesterday. It needs some more refactoring and testing before merging though. And I still need to implement deletion, which I've been saving for last.