Merge pull request #24 from oser-cs/refactor/layout

src/app/shared/blue_navbar/blue_navbar.component.html

src/app/shared/blue_navbar/blue_navbar.component.scss

src/app/shared/blue_navbar/blue_navbar.component.ts

src/app/shared/index.ts

src/app/shared/layout/layout.component.html

src/app/shared/layout/layout.component.scss

src/app/shared/layout/layout.component.spec.ts

src/app/shared/layout/layout.component.ts

...ared/nav-group-vertical/nav-group-vertical.component.html

...ared/nav-group-vertical/nav-group-vertical.component.scss

...shared/nav-group-vertical/nav-group-vertical.component.ts

src/app/shared/nav-group/nav-group.component.html

src/app/shared/nav-group/nav-group.component.scss

src/app/shared/nav-group/nav-group.component.ts

src/app/shared/nav-item/nav-item.component.html

src/app/shared/nav-item/nav-item.component.scss

src/app/shared/nav-item/nav-item.component.ts

src/app/shared/navbar/navbar.component.html

src/app/shared/navbar/navbar.component.scss

src/app/shared/navbar/navbar.component.ts