empty token is changed to nil when removing_token

fix some discrepancies api token tests

Fix broken functional tests ...

Fix broken specs with random see 55679

Fix broken tests for random seed 19381

Temporarily disable travis security checks

Since I'm testing the specs, this should help make it faster

Fix bug caused by random Org locale

Fixes recurring issue with tests being loaded in German

Fix broken specs

Fix tests breaking with seed 60029

Fix broken specs with seed 12116

Fix broken specs with seed 51011

Fix broken template upgrades specs

Fix travis artifacts addons

Add Travis asset debugging

Remove Amazon S3 region from asset uploads config

Move S3 configs to local travis file

Re-add hygiene tasks to Travis YML

Disable broken test for now

Refactor tests for template upgrade customisations

added validation tests (#1868) ...

added validation tests

added fr for I18n failing tests

Reset other_organisation when User org changes ...

- Refactored how user model defines callbacks
- Add specs

Fixed broken User specs

Remove spec for devise method

Update User specs ...

Also fixed bug in User.where_case_insensitive

Updates to org_spec.rb and user_spec.rb. ...

user_spec.rb has pending and broken tests.
FactoryBot file identifier_schemes.rb updated.

Add extra validations for all models ...

- Includes specs using the Shoulda gem
- Includes a refactoring of update_numbers to a "sortable" abstraction