Add nvim Sage syntax highligting & minor updates

- Add nvim Sage syntax highligting
- Update installer node for v16
- Update i3 config to restart status bar to avoid problems when
extending screens to hdmi

init.vim

@@ -179,6 +179,11 @@ let g:rainbow_active = 1
 au BufRead,BufNewFile *.circom set filetype=circom
 au BufRead,BufNewFile *.circuit set filetype=go-snark-circuit
 
+"" sage syntax
+augroup filetypedetect
+  au! BufRead,BufNewFile *.sage,*.spyx,*.pyx setfiletype python
+augroup END
+
 " for file watching
 set backupcopy=yes