Ux/54 help (#88)

* ux/54-help tooltips
* ux/54-help refetch after mutation
* ux/54-help broadcast event index
* ux/54-help prevent multiple keypresses when key held
* ux/54-help fat clock
* ux/54-help progress bar user defined
* ux/54-help onAir is button
* ux/54-help OSC: add missing presenter message
* ux/54-help OSC: enable / disable OSC
* ux/54-help handle timezone in excel date import
* ux/54-help tray left click to show app
* ux/54-help create queriable endpoint
* ux/54-help fix memoisation in lower thirds
* ux/54-help revise icons
* ux/54-help clarify text
* ux/54-help forgiving text parsing
* ux/54-help add smart keywords
* ux/54-help version bump

client/src/app/entryValidator.js

@@ -0,0 +1,13 @@
+/**
+ * @description Validates two time entries
+ * @param {number} timeStart
+ * @param {number} timeEnd
+ * @returns {{catch: string, value: boolean}}
+ */
+export const validateTimes = (timeStart, timeEnd) => {
+  let validate = { value: true, catch: '' };
+  if (timeStart > timeEnd) {
+    validate.catch = 'Start time later than end time';
+  }
+  return validate;
+};