issue #20874: trap for common error
Merge pull request #610 from shackbarth/20874

issue #20874: trap for common error
picked out font-awesome icons
Fixed breaking changes for new version of less. Added less 1.4.2 to package.json to freeze version
Merge pull request #618 from lynnaloo/less-upgrade

Fixed breaking changes for new version of less
Merge remote-tracking branch 'XTUPLE/master' into 20864-grid
issue #20864: moved css to less
issue #20864: normalize less
issue #20864: more less normalization