memberlist item alignment

stylesheets/_session.scss

@@ -1872,6 +1872,10 @@ input {
     margin-left: 5px;
     opacity: 0.8;
   }
+
+  &__avatar > div {
+    margin-bottom: 0;
+  }
 }
 
 .invite-friends-container {

ts/components/conversation/UpdateGroupMembersDialog.tsx

@@ -124,6 +124,7 @@ export class UpdateGroupMembersDialog extends React.Component<Props, State> {
           'noMembersInThisGroup'
         )})`}</p>
 
+        <div className="spacer-md" />
         <div className="session-modal__button-group">
           <SessionButton text={okText} onClick={this.onClickOK} />