[openstreetmap-website] Add ferry routing information for OSRM (#1068)

[Simon Legner]

Relates to #1000.

Uses instruction code 18 to represent a ferry instruction. Ferry icon
taken from Mapbox Maki set (CC0).
You can view, comment on, or merge this pull request online at:

  https://github.com/openstreetmap/openstreetmap-website/pull/1068

-- Commit Summary --

  * Add ferry routing information for OSRM

-- File Changes --

    M app/assets/images/routing-sprite.png (0)
    M app/assets/javascripts/index/directions/osrm.js (9)
    M app/assets/stylesheets/common.scss (2)

-- Patch Links --

https://github.com/openstreetmap/openstreetmap-website/pull/1068.patch
https://github.com/openstreetmap/openstreetmap-website/pull/1068.diff

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Reply to this email directly or view it on GitHub:
https://github.com/openstreetmap/openstreetmap-website/pull/1068
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