Resolve "Add simple course book list"

Closes #256 (closed) Closes #63 (closed)

Screenshots

Frontend todos

• Uhrzeit so wie im Mockup
  • Rechtsbuendig @ZugBahnHof
• Kasten nicht höher als input-feld
• fach und subject strukturierter nebeneinander
• Kursnamen irgendwie hervorheben
• datum gleiche einrückung wie das datum
• datum sollte überschrift sein und prominenter gestaltet
• datum braucht Wochentag
• mittlere spalte linksaligned
• Indikator ob Stundenthema richtig gespeichert wurde (@yuha )
  • when hovering over icon & success: show some fancy success message
  • when hovering over icon & error: show error message
• verify that changes are being tracked using revisions (using a mixin in core creating revisions when mutating) (blocked by AlekSIS-Core!1433 (merged))
• Remove outer card
• Move search, group select, ... into an app bar (see also this)
• Bottom sheet for date select should not be full width of screen (@yuha )
• Statusicon am Anfang der Zeile fehlt (#63 (closed) explains the different stati)

aleksis/apps/alsijil/frontend/components/coursebook/documentation/DocumentationStatus.vue

@@ -78,13 +78,13 @@ export default {
   },
   methods: {
     updateStatus() {
-      if (this.documentation?.lessonEvent.cancelled) {
+      if (this.documentation?.amends.cancelled) {
         this.currentStatusName = "cancelled";
       } else if (this.documentation.topic) {
         this.currentStatusName = "available";
       } else if (DateTime.now() > this.documentationDateTimeEnd) {
         this.currentStatusName = "missing";
-      } else if (this.documentation?.lessonEvent.amends) {
+      } else if (this.documentation?.amends.amends) {
         this.currentStatusName = "substitution";
       } else if (
         DateTime.now() > this.documentationDateTimeStart &&