Feat/ui v2 ohif logo svg (#1506)

* Adding new icons

* Introducing Svg component

* Adding ohif logo into header

platform/ui/src/components/index.js

@@ -2,7 +2,8 @@ import Button from './Button';
 import ButtonGroup from './ButtonGroup';
 import Icon from './Icon';
 import IconButton from './IconButton';
+import Svg from './Svg';
 import ThemeWrapper from './ThemeWrapper/';
 import Typography from './Typography';
 
-export { Button, ButtonGroup, Icon, IconButton, ThemeWrapper, Typography };
+export { Button, ButtonGroup, Icon, IconButton, Svg, ThemeWrapper, Typography };