fix: change navbar logo to text and fix menu icon (#11)

Author: vacodoceo

src/components/Navbar/Navbar.js

@@ -16,7 +16,6 @@ import Drawer from '@material-ui/core/Drawer'
 import ExpandLess from '@material-ui/icons/ExpandLess'
 import ExpandMore from '@material-ui/icons/ExpandMore'
 import Fab from '@material-ui/core/Fab'
-import Grid from '@material-ui/core/Grid'
 import KeyboardArrowUpIcon from '@material-ui/icons/KeyboardArrowUp'
 import IconButton from '@material-ui/core/IconButton'
 import List from '@material-ui/core/List'
@@ -25,6 +24,7 @@ import ListItemIcon from '@material-ui/core/ListItemIcon'
 import ListItemText from '@material-ui/core/ListItemText'
 import MenuIcon from '@material-ui/icons/Menu'
 import Toolbar from '@material-ui/core/Toolbar'
+import Typography from '@material-ui/core/Typography'
 import Zoom from '@material-ui/core/Zoom'
 import InputIcon from '@material-ui/icons/Input'