Added a "Subs" button to the nav bar.

And a "Subscribe"/"Unsubscribe" button to the top of every topic/roleplay:

Visit your subscriptions page for an overview:

So far it just differentiates between Roleplays and Non-Roleplays, but I'll improve it over time.
Your subs are also marked on topic lists:

Upcoming:
- Once I implement a system that tracks read/unread posts, I'll be able to actually display notifications for new posts in subscriptions and new PMs.
- I'll let you opt-in to email updates.

And a "Subscribe"/"Unsubscribe" button to the top of every topic/roleplay:

Visit your subscriptions page for an overview:

So far it just differentiates between Roleplays and Non-Roleplays, but I'll improve it over time.
Your subs are also marked on topic lists:

Upcoming:
- Once I implement a system that tracks read/unread posts, I'll be able to actually display notifications for new posts in subscriptions and new PMs.
- I'll let you opt-in to email updates.