End pause (#832)

* refactor: trigger ahead

* refactor: refresh often

* fix: handle empty rundown updates

* fix: handle falsy values

* style: avoid overlap of components

* refactor: freeze end option

apps/server/src/classes/data-provider/__tests__/DataProvider.test.ts

@@ -23,6 +23,7 @@ describe('safeMerge', () => {
     },
     viewSettings: {
       overrideStyles: false,
+      freezeEnd: false,
       endMessage: 'existing endMessage',
       normalColor: '#ffffffcc',
       warningColor: '#FFAB33',