Instead of having to rely on the filecache.json and ensuring it's up to date, we can just compare files with their vendor counterparts

[caendesilva]

Todos:

• Deprecate filecache.json and related services #248
• Update PublishHomepageCommand to compare existing index page with vendor files directly #246
• Remove the update filecache action

[caendesilva]

Adding to backburner as it is a rather large change, so deprecating it for the next release, with the removal in a future release.

[caendesilva]

I think the filecache service is pretty useful, and since the filecache array takes around 3.5ms to parse, prettify, and save to file. I think it's acceptable to rework it so that the cache is created on demand instead, especially since it is currently only used for publishing homepages. In the future, if it's used more, it may make sense to store the filecache in memory using a class singleton property.