Allow full search of video transcripts

[scowalt]

Users should have the ability to do a text search of all of the transcripts of all of the lecture videos. Users should see the results of this search as a list of relevant lessons. Users should be able to click on one of the lessons and (potentially) be taken to the exact part of the video relevant to their search term.

[scowalt]

@neelabhg , could you assign myself and / or @jdtran23 to this issue?

[scowalt]

Mozilla has a vtt.js library which could be helpful in implementing this feature.

There is also the Fuse library for fuzzy searching.

[scowalt]

An isolated (but working) prototype of this exists in this repository.

A reverse-index will be continuously maintained and stored in the sysassets repository, which should speed up searching and allow everything to be more scalable.

I'm unsure about where this search functionality would go in the new interface. Perhaps this discussion should be included in #20.

[jdtran23]

Transcript search now lives as a tab alongside the man pages search tab and the code tab.

Current state is that it plays an example video based on an inputted time. The point is that there's now an environment for the transcript search feature utilizing the auto-complete search bar.

The code is currently in my fork.

[scowalt]

I fixed the issue you're having in your fork

Make sure your slaves for xdomain are set as such:

xdomain.slaves({
    'http://cs-education.github.io': '/sysassets/proxy.html',
    'http://jdtran23.github.io': '/sysassets/proxy.html',
    'http://scowalt.com': '/sysassets/proxy.html'
});

However, you should consolidate all of this to the cs-education sysassets since this issue has been resolved.