Merge pull request #122 from thescouser89/prod

We are still using the vestal versions plugin, don't disable that option
Currently some parts of codes bypasses the use_mead_integration and use_bz_integration settings. This patch fill the holes.
add doc to explain shared_inline_bzs parameter
Merge pull request #123 from liweinan/enable_bz_mead_integration_settings

Enable bz mead integration settings