New footer

Remove error with electric car emissions factor

- Fix bug heating with new emissions factors
- Use intercity bus emission factor in Travel

Emissions factors updated for 2021.

Fix bug displaying vehicles units.

Remove django api apps

- Refactoring django apps : api > core
 - Force settings name / module to be unique
 - Improve Disciplines serializer

Fix import DEFAULT_SETTINGS

Fix bug when retrieving cloned commutes.
Fix bug in Commutes tests
Fix a bug when importing GES lab files

Load settings from apps.vue

Add administration setting menu to set some variables

Fix bug when deleting building

Add autocar to commute export

Fix bug when retreiving buildings

Fix bug when deleting / adding GHGIs

Fix bug when adding vehicle

Fix commutes display bugs

Remove scenario

Add intercity bus to commutes

Fix bug when activating account