* Allow toggle via config between two caller id selection methods

This only affects caller ID for users. If
monster.config.whitelabel.allowAnyOwnedNumberAsCallerID is falsy, the
old way of assigning caller ID will be activated i.e. users can only
have their caller ID set to numbers assigned to them, otherwise the main
number is used. If monster.config.whitelabel.allowAnyOwnedNumberAsCallerID
is truthy, the user can also have any number owned by the account used as
their caller ID.

* Add automatic eslint fixes

* Eslint fix: make mixed user of && and || tidier