Add contributor edition
- added viaf resolver
- improve contributors list display
- add update of document objects
- propagate update to back office
- update back office
- add bo-client to back office
- setup language initializer
- add options mechanism
- add language information in language list
- add lexvo resolver service + api
- add language and lexvo resolver to js app
- correct env template
- refresh bootstrap
- download google font
- add version information
- update dev virtual machine to centos7
- add a readme + clean folders
- add local .env file to start commands