Recurring Events Export

[samarth52]

Summary

Resolves: N/A

With the addition of recurring events, we want users to be able to export their events as well into a .ics calendar or image. However, having only recurring events in the schedule does not enable this feature. Moreso, the exported .ics calendar does not contain recurring events. This PR fixes these issues and other minor bugs.

Checklist

• [x] Fixed export not enabling with only recurring events
• [x] Fixed export to calendar not exporting recurring events
• [x] Fixed not being able to set start/end time between 9 PM and 10 PM
• [ ] Rounded event start and end times to multiples of 5 on submit in the EventAdd tab

How to Test

• Add events and try exporting to calendar or image

[github-actions[bot]]

PR Preview Action v1.3.0 :---: :rocket: Deployed preview to https://gt-scheduler.github.io/website/pr-preview/pr-221/ on branch gh-pages at 2023-04-06 15:51 UTC