Add lang to url

src/client/components/facet_results/ResultTable.js

src/client/components/main_layout/Main.js

src/client/components/main_layout/MainCard.js

src/client/components/main_layout/TopBar.js

src/client/components/main_layout/TopBarInfoButton.js

src/client/components/main_layout/TopBarLanguageButton.js

src/client/components/perspectives/sampo/Perspective1.js

src/client/components/perspectives/sampo/Perspective2.js

src/client/components/perspectives/sampo/Perspective3.js

src/client/configs/sampo/GeneralConfig.js

src/client/configs/sampo/PerspectiveConfig.js

src/client/containers/SemanticPortal.js

src/client/helpers/helpers.js

src/client/index.js