New: Saved pages

At long last, we've implemented the concept of saved pages. When reading a comic in "all pages" mode, hover a page (desktop) or tap it (mobile), and you'll see a bookmark icon in the top-right of the page. When reading in "gallery" mode, you'll find a button below the page. We've also added a new section to your profile page, where saved comics and pages are displayed. There's a shortcut icon to get to this section in the top-right of your navigation bar. Saved comics are public - anyone can see yours when viewing your profile. Saved pages are private - only you can see those. Naturally, you need to be logged in to use the save page and comic features.