Included missing lib for migrations

This will make Meteor ignore changes on this folder which will prevent rebuilds of whole livechat package.

For local development it is recommended to run the livechat app individually like on run.sh file.

* Add eslit rule `one-var`

* ESLint add rule `no-var`

* Add ecmascript package to all packages

* Use ecmascript package for server and client on saml package

* Fix compilation

- Bypass user registration validations for livechat users - Closes
  #2276, #1963

- Set livechat count and order to zero when empty

- Pick a livechat departament if none select and there is more than one

- Fix livechat warning hide message

- Add autolinker to livechat

* Remove unused helpers in some templates

* Improve and standardize UI for lists

* Create an API to add access room validators

* New page to see livechat sessions

* Add external.js to .eslintignore

* Return publication error correctly