Work on #431 - proper display of variating QA in boundaries selector and chart

...mponents/pab-profile-chart/pab-profile-chart.component.ts

src/app/components/pab-table/pab-table.component.ts

...e-results-selector/variable-results-selector.component.ts

src/app/formulaire/definition/form-pab.ts

src/app/results/calculator-results.ts

src/locale/messages.en.json

src/locale/messages.fr.json