Disable livereload 'open'

This option makes sense when you're not targeting Chrome apps.
Silence HumanizeDuration warning

… since we're aware of it and are sourcing it manually. HumanizeDuration will
likely be dropped in a future iteration of the dashboard anyway.
Merge pull request #102 from tlvince/refactor/build

Disable livereload 'open' silence HumanizeDuration