Add new team as Staff members
Fix mix-it/linkit#294: "mathieu" -> "mpetitdant" for Mathieu login, fixed About page link to Mathieu's profile.
New team in About page, with (French only) bios.
Fix mix-it/linkit#299 : bump library google-api-services-plus from v1-1.3.0-beta (no more available in Maven central) to v1-rev192-1.19.0
Merge pull request #298 from clacote/new-staff

New team as Staff members
Merge pull request #300 from clacote/gplus-bump

Fix mix-it/linkit#299 : bump library google-api-services-plus from v1-1.3.0-beta to v1-rev192-1.19.0
Fix mix-it/linkit#301: old+new team members in a single list. List now comes from a DB query: "select from Staff".
Add all new members in local initial data, to enable login as Staff for them, and be listed in About page.
Merge pull request #302 from clacote/about-single-list

About page in single shuffled list of old & new members
Julien Ripault and Mathieu Calba are no more Staff: they shouldn't be listed on About page.
About: better row management (new row every 3 staff members)