So... As far as npm install I'm having issues pretty much the same here: https://community.nodebb.org/topic/540/-nodebb-theme-lavender-lavender-theme-for-nodebb/73 (at the bottom) but I'm not sure how to reinstall npm on the stack or if that would even help.
I guess I should be developing Node.js on linux but so far I've been dual booting and I'm thinking about investing in like a Gigabyte Brix and having two monitors side by side (or even a KVM switch). I use Windows for graphics and I like Ubuntu for developing stuff and it's kind of my dream setup to begin with.
Edit: After rolling around in bed and drinking some coffee, I manually inserted the lavender theme in the node_modules folder, removed it from the npm-shrinkwrap.json file (created a npm-shrinkwrap-backup don't worry), and tried npm install again. It seemed to work up until "[email protected]" saying "no repository field" as a warning. I had to ctrl-C because it was literally stuck there. Now I have a bunch of nice modules installed in the node_modules folder but I'm assuming not all of them to be able to get NodeBB up and running.
Tl;Dr: npm is really not liking .tgz I think
Edit 2: I screwed up the entire NodeBB installation by typing node app too early and rushing everything. I'm going to take a break and probably upgrade the Ubuntu partition I have and do everything on there.