Things to remember to fix in incident list view for classic argus

[hmpf]

• Decide what to do with the refresh control in classic frontend #997
• List empty due to no incidents matching the filter should have different text than empty due to empty database argus-htmx-frontend#105
• It should be possible to select how many incidents to show per page argus-htmx-frontend#76
• Allow user to override datetime format, to obey the Church of ISO argus-htmx-frontend#100
• Fix the severity level column, show name as well as number in badge argus-htmx-frontend#116 (Fix misc #118, Each severity level should have a color that fits with the chosen theme #996)
• Make a column for tickets argus-htmx-frontend#114 (Implement a model and API for events #112)
• Combine status and ack-columns, for classic look argus-htmx-frontend#104, maybe (Endpoints for changing incident to active or inactive #110)
• Use icons for open/closed, acked/unacked (or show nothing for unacked) in their respective columns, like it is in classic argus-htmx-frontend#99 (Tag notification filter #122)
• If there are to be no actions, remove actions column argus-htmx-frontend#113 (Implement filtering on tags in Filter model #117)
• In the "source" column: a) only show source, not source + (source type), or b) use an icon for source type. (A is a quickfix) (Add AlertSourceType model #58)
• If there are to be no actions, remove actions column argus-htmx-frontend#113 (Implement filtering on tags in Filter model #117)
• Replace "Argus Logo" with the actual logo (Rename NetworkSystem model to AlertSource #47, Add logo to navbar argus-htmx-frontend#61)
• Bulk incident handling is missing, it is possible to add the controls first (to show what it will look like) without supporting it in the code (Rename Alert model to Incident #69)
• When clicking on username (top right) in order to change theme, the entire header expands. Clicking on username should result in a dropdown. (Upgrade Django to version 3 #57, Convert user section in navbar to an avatar with dropdown menu argus-htmx-frontend#62)

"Filter incidents"-box issues moved to #1000