18245: Update the "Ruby and Bundler" installation page:
authorWard Vandewege <ward@curii.com>
Fri, 1 Oct 2021 20:25:39 +0000 (16:25 -0400)
committerWard Vandewege <ward@curii.com>
Wed, 6 Oct 2021 12:59:52 +0000 (08:59 -0400)
commit63bd2a384496fe5e9d142b9354ec2f73911d17ec
treee3f6446a4b9cc2c69cf62dd1dd0fd70bef2a910a
parent2b79f4c95e82d9cc7840a59af52b5824259defc5
18245: Update the "Ruby and Bundler" installation page:
- installing the system bundler package is no longer needed
- the RVM installation method already installs bundler, no need to do
  that explicitly
- update the references to the latest Ruby 2.5.x version
- remove reference to Ubuntu 16.04 which is no longer supported
- update the "install from source" documentation to make it work with
  the Arvados rails packages

Arvados-DCO-1.1-Signed-off-by: Ward Vandewege <ward@curii.com>
doc/_includes/_install_ruby_and_bundler.liquid