- adds a new analysis tab in the sidebar
- the analysis tab shows length distribution for different way types, surface, and smoothness
- table rows can be hovered/clicked to highlight the according segments on the map (similar behaviour as the detailed data table)
- localization is implemented for `de` and `en`
- the method for finding segment edges was extracted from `js/control/TrackMessages.js` into `js/util/TrackEdges.js` as it's used in the new analysis class too (the Gulp config was changed to reflect that)
Notes:
I had the idea to use the *DataTable* plugin for rendering the tables but decided against it. The only meaningful way to sort such a table is by the length column and that's already the case. So it's just three plain, old HTML tables, rendered by jQuery.
For meaningful statistics the `processUnusedTags` setting has to be enabled in the routing profile. Only in this case the BRouter backend includes all needed tags (`highway`, `surface`, and `smoothness`) for *every* route segment in the response. I’ve enabled that setting for all profiles at my BRouter-web instance at <https://brouter.m11n.de/>.
Use "x | y" format instead "x (y)"
(The old format was a bit confusing, e.g. the second part of the label
could be mistaken for an "explanation" of the first part, while it
actually is an entirely separate label.)
Repeat unit for every metric.
Use plural for units.
Use "-" everywhere when a metric is not yet available instead of mixing
"-" and "0".
Properly revert to initial "-" when removing route instead of showing
"0".
Show "0" instead of "" when route length cannot be calculated yet.
Slightly change wording ("Energy per 100km").
