3203: Update "Accessing Arvados Workbench" page.
3203: Update the pipeline tutorial page to run pipeline from a project.
Merge branch 'master' into 3203-workbench-tutorial
3203: fix doc issues with compute references.
3203: fix doc issues with old dashboard references.
Merge branch 'master' into 3203-workbench-tutorial
Merge branch 'master' into 3203-workbench-tutorial
closes #3203
Merge branch '3203-workbench-tutorial'