[breadcrumbs] Small breadcrumb components refactoring
* use `open_breadcrumbs` and `close_breadcrumbs` methods where applicable in
the BreadCrumbEntityVComponent hierarchy
* include the first separator related code in `open_breadcrumbs` to avoid code
duplication
Closes #3223911.
/***************************************/
/* Manage view (views/startup.py) */
/***************************************/
table.startup {
width: 100%;
}
/* table.startup td { */
/* padding: 0.1em 0.2em; */
/* } */
table.startup td.addcol {
text-align: right;
width: 0.5em;
}
table.startup th{
text-align: left;
}