Fix the study alignment on the left (#111)

Co-authored-by: Geoffroy Jamgotchian <[email protected]>

Author: mikatheo

src/components/study-manager.js

@@ -274,7 +274,7 @@ const StudyManager = ({onStudyClick}) => {
 
     return (
         <Container maxWidth="lg" className={classes.cardContainer}>
-            <Grid container spacing={2} className={classes.grid} justify={'center'}>
+            <Grid container spacing={2} className={classes.grid}>
                 <Grid item xs={12} sm={6} md={3} align="center">
                     <Box className={classes.addButtonBox}>
                         <CreateStudyForm />