What does these JS files do? (+ help needed on WP optimization)

Hey there guys. I have these two JS files and I sincerely don’t know what they actually do on my WordPress website. Can you help me to understand their functionality?

Additionally, I’d like to have also some help on how I could optimize the website itself. I currently get this result on GtMetrix:


Not so bad, but I think that I should improve it more. Do you have some suggestions for me?
I’m running on a VPS, CloudFlare with RocketLoader enabled, W3 Total Cache plugin.

Webpagetest.org result:

(I sincerely doesn’t understand the repeat view infinite load time - maybe it’s a temporary issue with WPT itself?)

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