WIP - handle Leaflet.draw add/delete with R leaflet layerManger#98

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timelyportfolio wants to merge 2 commits intotrafficonese:masterfrom timelyportfolio:draw-layermgr

+36-1

Commits on Jul 31, 2017

proof of concept for trafficonese#96
timelyportfolio
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try to find existing category to remove deleted non-Leaflet.draw features
timelyportfolio
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