Theme engine (#40)

* [TECH] Nginx add referential apps

* [DLAB-4154] Improve the management of mongo scripts

- Mutualize scripts between dev environment and deployment
- Add versioning on scripts executed on a given environment

* [DLAB-4154] Add Mitogen in order to improve performance (mongo deployment in local)

* First step: Update main color + customer collection

Signed-off-by: Makhtar DIAGNE <makhtar.diagne@teamdlab.com>

* Get colors from serveur (mock) + apply color conversion and default/overriden values

Signed-off-by: Makhtar DIAGNE <makhtar.diagne@teamdlab.com>

* Get colors form application and AuthDTO + make specific colors (transparent, light, dark)

Signed-off-by: Makhtar DIAGNE <makhtar.diagne@teamdlab.com>

* Quick push

Signed-off-by: Makhtar DIAGNE <makhtar.diagne@teamdlab.com>

* Push for test

Signed-off-by: Makhtar DIAGNE <makhtar.diagne@teamdlab.com>

* WIP themes colors

Signed-off-by: Makhtar DIAGNE <makhtar.diagne@teamdlab.com>

* Fix colors
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