Migrate Date Pickers to official

[fat-tire]

I haven't tried it yet but maybe switch from

implementation 'com.wdullaer:materialdatetimepicker:4.2.3'

to the official MaterialTimePicker.

It's had changes as recently as a few days ago, but if someone wants me to try it I can. Just checking interest.

[archie94]

I think the library we are using is a little more customizable, although I am not aware if we are using these customizations.

[lukeswitz]

.02 - I'd vote to leave this out until the major pain points are worked out.

Reasoning: it works & has no open issues for date/time selection with this codebase. Localization and date-time formats currently stable.

UI needs a proper refresh when functionality hits an acceptable mark.

A few that come to mind:

• Onboarding Sensor Layout
• Settings
• Enhanced Signal setup
• Status glyphs for server & HB
• Separate & customizable sensor selection for legacy/flagship devices

Open to suggestions here & future as I have more time to devote to the project. Thanks all for the continued effort.