Improve banner
Merge pull request #11989 from ZDroid/banner

Improve banner
Upgrade to CSScomb 1.2.1 and reset some ordering to ensure no rogue spaces
Merge branch 'master' of github.com:twbs/bootstrap
Fixes #11975: Change from png to .ico for favicon
Grunt
Fixes #10492 better:
- Made more generic. Applies to "> .table" and "> .table-responsive > .table" to support td/tr background colors too and not just .table-striped
- Supports tfoot