minor docs formatting
Remove unused MarkerCollection#clusterOptions_ property
Marker#getType
Rename gmaps-markerclusterer-plus AMD module

- to prevent ambigous naming vs. leaflet markerclusterer
minor: reorganize amd config
Remove almond path from base AMD config

-- Almond is a build dependency, not a lib dependency
  and really only needs to be referenced from the r.js config
Install and AMD config for Leaflet-MarkerCluster
Fix leaflet.Tile strategy class name

- to match file path
OSM Layer: Load strategy object

- to make asynchronouse stuff easier
Fix Leaflet map base layer

- Must be immediately availble, in order
  for other map logic to work synchrounously

  eg. MarkerCluster expects a layer to be set
  on the map. If a layer is set only after the stack
  has cleared, the Clusterer will be sad
Leaflet: use unminified cdn path
MapCanvas test helper: do not require ID param
Example style for leaflet clusters
Refactor test Flag
Marker: load strategy synchronously
DELETE: sandbox bak

- working Leaflet clusters proof-of-concept
WIP: MarkerCluster

see TODO