Adding utility class to load customization resources for easier prototype

Also adding support for grouping multiple plugins in same APK using process name

To customize resources update the defination of dymanic_resources in config.xml:
    <array name="dynamic_resources">
        <item>@color/delete_target_hover_tint</item>
        <item>@integer/config_folderDelay</item>
        <item>@dimen/all_apps_action_spacing</item>
        <item>@fraction/container_margin</item>
    </array>

Change-Id: I79c08845464510af96b16d375b424ad914657f39