chore(build): remove nsp-task from production
chore(travis): remove env from Travis
Merge pull request #1573 from vladikoff/devDepNSP

chore(build): remove nsp-task from production
Merge pull request #1574 from vladikoff/travisEnv

chore(travis): remove env from Travis
Update CONTRIBUTING.md

Update CONTRIBUTING.md to include more detail on rules around contributing and code reviews.
Add MPL 2.0 license file.
Merge pull request #1575 from mozilla/add-license

Add MPL 2.0 license file.
Update CONTRIBUTING.md
fix(teats): Use execute to clear browser state
feat(signin): Add an account chooser
wip