wrap create post in Language Overview with permission guard

Author: rdonigian

src/components/posts/PostList.tsx

@@ -40,15 +40,19 @@ export const PostList = ({
         <Grid item>
           <Typography variant="h3">Posts</Typography>
         </Grid>
-        {canCreate && (
-          <Grid item>
-            <Tooltip title="Add Post">
-              <Fab color="error" onClick={createPost}>
-                <Add />
-              </Fab>
-            </Tooltip>
-          </Grid>
-        )}
+        <Grid item>
+          <Tooltip title="Add Post">
+            <Fab
+              sx={{
+                visibility: canCreate ? 'visible' : 'hidden',
+              }}
+              color="error"
+              onClick={createPost}
+            >
+              <Add />
+            </Fab>
+          </Tooltip>
+        </Grid>
       </Grid>
       <List
         {...rest}