Merge branch 'stable-3.0'

* stable-3.0:
  Replace bazel-genfiles with bazel-bin in documentation
  Upgrade bazlets to latest stable-3.0 to build with 3.0.3 API
  Bump bazel version to 1.0.0
  [ui] add a scrollbar when the overlay is too big
  Add autocomplete for groups
  Upgrade bazlets to latest stable-2.15 to build with 2.15.17 API

Change-Id: Ibeac8499b24b984a885c85397e77369930337662