FxR cross app dialog standarization

[keianhzo]

Is your feature request related to a problem? Please describe.
Dialogs in the app are using different styles that cause consistency issues. We should standardize the dialog styles based on the latest spec: https://trello.com/c/25qaflLv/400-sl-7-componentsdialogs

• Permissions
• Restart
• PopUp Blocking
• Crash dialog
• Remove Max Windows dialog
• Collect Voice samples
• What's new
• Sign out
• Voice Search

Describe the solution you'd like
Create base dialog styles and reuse them in the different dialogs.

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
Add any other context or screenshots about the feature request here.

[jvonitter]

@keianhzo do you have a size estimate for this?

[keianhzo]

@jvonitter added!