DARS form elements - accessibility fixes

src/app/dars/dars-view/dars-view.component.html

src/app/dars/metadata-table/metadata-table.component.html

src/app/dars/metadata-table/metadata-table.component.scss

src/app/dars/metadata-table/metadata-table.component.ts

...egree-audit-dialog/new-degree-audit-dialog.component.html

...t-if-audit-dialog/new-what-if-audit-dialog.component.html

...degree-planner/course-search/course-search.component.html

...-later-container/saved-for-later-container.component.html

...gree-planner/term-container/term-container.component.html

src/assets/sass/general.scss