Accessibility, summary of user terms and contrast bar reworked

src/App.js

src/Components/Accessibility/ContrastBar.css

src/Components/Accessibility/ContrastBar.js

src/Components/Acessibility/ContrastBar.js

src/Components/ButtonAvaliarRecurso.js

src/Components/Carousel.js

src/Components/Header.js

src/Components/Modal.js

src/Components/SnackbarComponent.js

src/Components/UploadPageComponents/GetIconByName.js

src/Components/UploadPageComponents/StyledComponents.js

src/Pages/CollectionPage.js

src/Pages/SummarizedUserTerms.js

src/Pages/UserTerms.js

src/img/termos/handshake.svg