ROENROLL-1641 toggle sidenav from mobile header

src/app/core/header/header.component.html

src/app/core/header/header.component.scss

src/app/core/header/header.component.ts

src/app/degree-planner/degree-planner.component.html

src/app/degree-planner/degree-planner.component.ts

src/app/degree-planner/store/actions/ui.actions.ts

src/app/degree-planner/store/reducer.ts

src/app/degree-planner/store/selectors.ts

src/app/degree-planner/store/state.ts