[NMS] Add alarm tab on Chassis detail page

[wouter1975]

This is an idea received during first demo:

• Can we see the active alarm as a additional tab on the chassis detail page?
  • maybe also add a counter to the tab to indicate whether active alarms exist
  • It would probably also add value if this counter is added to the chassis list page, make this column sortable, and link it to the chassis alarm tab page of the specific node?

Question:

• best solution is to get the alarms from Zabbix API. Acknowledged alarms can be minified to only draw attention to the active alarms.

For the Chassis port list, we could add a column with the alarms per port:

• hoover on the alarm lists all alarms of this port
• clicking on the alarm navigates to the alarms tab of the chassis