this piece of code broke if we had tiles coming from a tpk in our indexeddb
Merge pull request #211 from jabadia/jabadia-fix-show-tiles

fix show tiles
fixed show tiles - now we only show tiles that belong to the same basemap
Merge pull request #212 from Esri/jabadia-fix-show-tiles

fix show tiles (2)
totally fix show tiles
Merge pull request #213 from Esri/jabadia-fix-show-tiles

totally fix show tiles