Upgrade notes

[IMPORTANT] ORACLE users only: due to a bug in the third party library auditlog, you need to follow instructions for 2 step migration highlighted here: https://django-auditlog.readthedocs.io/en/latest/upgrade.html
2 timed services need to be added, nemo_check_update_wait_list and nemo_email_scheduled_outage_reminders for the new tool waitlist operation mode and the scheduled outages email reminders, respectively. Systemd services are available in the systemd folder
2 email templates need to be added for those features as well, in Customization -> File & email templates: wait_list_notification_email.html and scheduled_outage_reminder_email.html, available in the emails folder

New features

Tools can now operate in 3 modes: regular/waitlist/hybrid (thanks JPL Microdevices Laboratory for the contribution!):
- Regular mode is the normal/previous mode of operation and the default for all tools
- Waitlist mode allows users to sign up on a list when someone is already using the tool, and to be notified when it's their turn. Tool reservations are not allowed in waitlist mode.
- Hybrid mode is similar to waitlist mode except that reservations are still allowed and take precedence over the waitlist.
- There are customization options to specify buffer times after which a spot is lost and to determine if the tool should be available if it's close to a reservation time.

Added settings in Customization -> Calendar to specify the time format used for the events (thanks @r-xyz for the contribution!)
Reporting a problem and adding a comment for a tool is now available in the Kiosk (Thanks Stanford SNF for the contribution!)
HTML is now allowed in alert contents
In Detailed administration -> Configuration, added new column to show whether the linked tool is visible and added filter
Added display order to documents throughout NEMO (Tool documents, User documents, Project documents, Contract documents, Safety item documents, Knowledge base documents).
Added display order for Safety items in the same category and Knowledge base items
Project usage will now show all usage by default when nothing is selected (selecting a user, project or application is not required anymore)
Added scheduled outage reminders to be set on tool/area/resource outages (Thanks Polytechnique Montreal for the contribution!).
Updated resource outage page to allow recurring outages.
Added a "Mark as applied" button on adjustment requests to signal that the adjustment has been dealt with (Thanks Cornell NanoScale Facility for the contribution!).
Added an "Adjust charge" button on adjustment requests to change the charge itself based on the approved dates (Thanks Cornell NanoScale Facility for the contribution!).

Fixed sensors not accepting 0 value
Fixed dismissible alerts for users not showing the option to actually dismiss it
Fixed validation error in transfer charges showing the exception page instead of in the form itself