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
Optimize use of iD.svg.Points.points
Optimize iD.svg.Labels
Pull imagery from editor-imagery-index
Support polygon imagery bounds

Fixes #768