* stable-3.0:
Load proto_library from @rules_proto//proto:defs.bzl
Update git submodules
Set version to 3.0.3-SNAPSHOT
Use --header-text-color css variable for some classes in gr-main-header
Bazel: Add fixes for --incompatible_load_{java|python}_rules_from_bzl
Bazel: Bump minimum supported version to 0.29.0
Lucene index configuration and docs.
Change-Id: I82a153e2d3c3fede0347d2a870025143288721e6
1cb260eb64