New Modes app not switching modes

[bravenel]

And I can confirm that there is a bug wrt multiple selections of presence sensors:

@bravenel

The following are known bugs in 2.3.3.123 release. We expect to address these for the next release.

• Screen reader problems with tables in UI.
• Thermostat Schedule: Throws error when renaming a time period with no time set (line 766).
• Mode Manager: Problems with presence settings not changing mode as expected.