fixes the icon on the final "begin mapping" dialog of the walkthough
because of recent changes of the sprite.svg image, the dialog did accidentaly show the google plus logo.
Fix walkthrough
Merge pull request #1739 from tyrasd/patch-1737

Fix loading graph of unserialized objects. Fixes walkthrough
Merge pull request #1740 from tyrasd/patch-after-walkthrough

Fixes the icon on the final "begin mapping" dialog of the walkthough
walkthrough: use correct css class for intro message of the "lines" chapter
Fix walkthrough on Firefox (#1743)
Adjust for small screen
Update translations
1.1.6
walkthrough: increase timeout for revealing road subgrid
200ms seems to be too low, because the fade-in transition seems to take 250ms and an the unfinished animation can cause troubles.
this fixes #1742
add missing context parameter to call of intro.pad() in method retry() for incomplete way drawings
Update translation in correct place
Remove duplicate style
Merge pull request #1744 from tyrasd/patch-walkthrough-lines-tooltip

Fixes some walkthrough glitches
walkthrough: handle wrongly selected road type
Currently, when one selects a road type other than residential, the walkthrough gets stuck. This adds an additional step for this case and tells the user to redo the preset selection.
Merge pull request #1746 from tyrasd/patch-walkthrough-retry-preset

walkthrough: handle wrongly selected road type
Use d3.geo.area
Ensure asGeoJSON returns winding orders expected by D3
Cache GeoJSON transient
Insert areas in sorted order

Fixes #1693