Refill Themes

[sarahsnow1]

Overview

Adds methods to set a themed style and configure it with custom label level, detail level, and theme colors. Allows setting label level, detail level, and theme color after themed style has been set. If the current style is not themed, setting these values will do nothing. If an invalid label or detail level is given, the methods throw IllegalArgumentExceptions.

Proposed Changes

• Adds new ThemedMapStyle and updates RefillStyle to extend it
• Adds enums for supported theme colors
• Sets default label levels to the old, "more label" equivalent
• Adds methods to MapzenMap to allow configuration of theme and theme properties
• Adds support for restoring theme details on orientation changes
• Adds test coverage for new features

A follow-up PR will add support for setting the style asynchronously after the map has been loaded

Closes #406