make it trivial for everyone to build the helpdb.jl file
improve documentation for takebuf behavior (#8575)
add julia-env to deps/.gitignore
fix #8576
Doc: Fix codeblock formatting errors in parallel computing section
Doc: proper cross-referencing of ClusterManagers
Doc: Clean up description of op in manage
Doc: fix whitespace so that lists are formatted correctly in parallel computing section
ModInts example: use invmod instead of gcdx

Ref: 331eb3f