first change for wms basemap pane
Merge branch 'master' into CDB-2723
CDB-2723 #resolve - New wms service working
Merge branch 'master' into CDB-2723
CDB-2723 #resolve - new wms service integrated
CDB-2723 #resolve - all WMS layers are valid
CDB-2723 #resolve - applying bounding_boxes for new proxy basemaps
CDB-2723 #resolve - added loading state when wms proxy is creating new basemap in background
Merge branch 'master' into CDB-2723
CDB-2723 - tracking people using WMS proxy service
CDB-2723 - frontend assets version changed
CDB-2723 - wms api endpoint with fastly
CDB-2723 - changed mixpanel parameters
Merge pull request #473 from CartoDB/CDB-2723

New WMS proxy service