adds message after personnal data modifications

src/app/members/account/edit-data/edit-data.component.html

src/app/members/account/edit-data/edit-data.component.scss

src/app/members/account/edit-data/edit-data.component.ts

...ent-home/account-overview/account-overview.component.html

src/app/members/student-home/student-home.component.html

src/app/panes/panes.module.ts

src/app/panes/three-panes/three-panes.component.html

src/app/panes/three-panes/three-panes.component.scss

src/app/panes/three-panes/three-panes.component.ts

src/app/panes/two-panes/two-panes.component.ts