Checkmk Werk 13917: UI: Improve styling of pending changes info

ID: 13917 Title: UI: Improve styling of pending changes info Component: Multisite Level: 1 Class: New feature Version: 2.2.0i1 The display of pending changes information in the top right corner is now more noticeable for given changes and more decent when there's no pending changes. Font size, weight and color and icon size are changed respectively.