#89 => Improvment progress-bar

.../app/admin/instance/components/instance-form.component.ts

client/src/app/instance/instance-style.service.ts

client/src/app/instance/instance.component.ts

client/src/app/instance/instance.module.ts

...tiple/components/position/parameters-panel.component.html

...ultiple/components/position/parameters-panel.component.ts

...-multiple/components/progress-bar-multiple.component.html

...-multiple/components/progress-bar-multiple.component.scss

...ltiple/components/progress-bar-multiple.component.spec.ts

...ch-multiple/components/progress-bar-multiple.component.ts

...stance/search-multiple/containers/datasets.component.html

...stance/search-multiple/containers/position.component.html

...search-multiple/containers/result-multiple.component.html

...pp/instance/search/components/progress-bar.component.html

...pp/instance/search/components/progress-bar.component.scss

...instance/search/components/progress-bar.component.spec.ts

.../app/instance/search/components/progress-bar.component.ts

client/src/app/metamodel/effects/instance.effects.spec.ts

client/src/app/metamodel/effects/instance.effects.ts