Improve alert dialog style

[MorenoTropical]

Purpose / Description

The dialogs didn't look much like material dialogs, so I applied the overlay theme to get animations, round corners and material style

Fixes

• Fixes [Bug] Change color of Checkbox in AlertDialog  #15174

Approach

I used Material Dialog Theme Overlay and did a fix with the text color

I was going to remove AlertDialogStyle as well but someone else is doing something with it

How Has This Been Tested?

dialog.webm

light.webm

API.25.webm

Checklist

Please, go through these checks before submitting the PR.

• You have a descriptive commit message with a short title (first line, max 50 chars).
• You have commented your code, particularly in hard-to-understand areas
• You have performed a self-review of your own code
• UI changes: include screenshots of all affected screens (in particular showing any new or changed strings)
• UI Changes: You have tested your change using the Google Accessibility Scanner

[lukstbit]

While the videos are helpful it would be better if you could supply several images for dialogs where we have a before and after side by side so it's easy to see the differences.

[BrayanDSO]

The code changes themselves are fine, but it needs a manual check of the other dialogs. The app has many of them and some are relatively complex or not follow some of the best practices for styling.

An automated screenshot tool would really help here.

[MorenoTropical]

[MorenoTropical]

@lukstbit @BrayanDSO please take a look or tell me what to do do

[BrayanDSO]

LGTM

[mikehardy]

I think this looks good, with (as far as I can tell, and I was trying...) all comments addressed with reasonable support

This statement may be due for review and perhaps a follow-on now that GSoC is merged (I think - most are merged, hopefully the ones that were interfering with this are merged):

I was going to remove AlertDialogStyle as well but someone else is doing something with it

I believe comments were addressed