Alarm Table text bold if 'Style with severity' is checked

Agreed, the bold fonts on severity-selected rows looks odd.

This change is part of the ranger/helm-3-improvements branch that will include a few other HELM-* issues as well. WIP here: https://github.com/OpenNMS/opennms-helm/tree/ranger/helm-3-improvements

For those willing this to be as described, as workaround just remove from CSS table.dark.css and table.light.css the font-weight:600 and replace by font-weight:normal in all severity class.

Described example also sets severity color pallete to match OpenNMS UI.

.severity .indeterminate
{
font-weight:normal;
color: black;
background-color: #ebebcd;
}

.severity .cleared
{
font-weight:normal;
color: black;
background-color: #eeeeee;
}

.severity .normal
{
font-weight:normal;
color: black;
background-color: #d7e1cd;
}

.severity .warning
{
font-weight:normal;
color: black;
background-color: #fff5cd;
}

.severity .minor
{
font-weight:normal;
color: black;
background-color: blanchedalmond;
}

.severity .major
{
font-weight:normal;
color: black;
background-color: #ffd7cd;
}

.severity .critical
{
font-weight:normal;
color: black;
background-color: #f5cdcd;
}