Minor fixes to mattermost UI

web/sass-files/sass/partials/_post.scss

@@ -256,6 +256,7 @@ body.ios {
 	}
 	p {
 		margin: 0 0 5px;
+		font-size: 0.97em;
 		white-space: pre-wrap;
 	}
 	.comment-icon__container {

web/sass-files/sass/partials/_sidebar--left.scss

@@ -70,7 +70,7 @@
                     color: #111;
                     background-color: #e1e1e1;
                     border-radius: 0;
-                    font-weight: 600;
+                    font-weight: 400;
                 }
             }
         }