add preset for route=hiking relations
Expand help text on GPX, providing a link to upload GPX files

We know the user is logged in, so we're safe directing right to the upload page.
add preset for amenity=vending_machine
Catch localStorage quota exception. Fixes #1807
Update string to match UI. Fixes #1803
Merge pull request #1785 from tyrasd/hiking-route-preset

add preset for route=hiking relations
Merge pull request #1798 from tyrasd/preset-amenity-vending_machine

add preset for amenity=vending_machine
Convert some remaining en-GB to en-US

Also added alternete dialects to preset search terms

en-US and en-GB are close enough that there's value in having en-GB terms
in the en-US terms list.
Merge pull request #1809 from pnorman/en_dialects

Convert some remaining en-GB to en-US
Merge pull request #1790 from pnorman/gpx_help

Expand help text on GPX, providing a link to upload GPX files
Add terms for fish and chips and petrol
Merge pull request #1815 from pnorman/reddit_synonyms

Add terms for fish and chips and petrol