Adminimal CSS fixes

After a recent update to the Adminimal Drupal theme (Adminimal 7.x-1.25), some CSS issues arose. Put these CSS fixes in a CSS injector entry only for the Adminimal theme.

Issues

On some admin screens, the save buttons are too short. Box sizing is the culprint. Was content-box. Now is border-box. The latter is probably correct. But it breaks the layout.

/* Adminimal fixes */

/* fix stubby save buttons */
body.adminimal-skin-material .form-actions input {
  box-sizing: content-box;
}