Filtering on custom asset types - and create custom asset icons/stamps o

There are two parts to this. One is to allow for filtering (layering) of custom asset types so that you can see where a specific type of asset is. For instance, Filtering to allow the user to see where a specific model of desktop PC is on the Maps. To go hand-in-hand with that, allow for custom asset type stamps (icon) to be associated to custom types. Carrying the previous example a step further, allowing a custom stamp icon for each model of a Desktop PC so that the user can quickly and easily see where that particular model lives.