Add a "new" notification when new videos/literature are released

[Jaeiya]

The menu should be able to display if a new video or literature document has come out. The way we're currently authenticating users could be appended with the latest video information.

Problem

Currently there is no way to detect changes to our dynamic content; this is because all changes to dynamic content are handled by the build process, not the server.

Solution

In order to provide a means for the server to track changes, we need the build process to create a document that explicitly describes these changes when content is updated. Unfortunately, this will rely on a new way to build our static files, which will be addressed in #47. During the re-building of that process, we can then start to explore the most efficient way to compile changes for the server to consume.

[Jaeiya]

It was an oversight to think that this issue could be addressed in the next milestone. The description has been updated to highlight the engineering problem and solution required.

[Jaeiya]

Add "New" notification for Video/Literature sections