fix JS sign-out (closes #2991)
move `is_locked` from `elsewhere` to `participants`
add a regression test
fix OpenStreetMap variables in defaults.env
use the other Twitter OAuth endpoint (fixes #2076)
Merge pull request #3012 from gratipay/move-is_locked

Move `is_locked` from `elsewhere` to `participants`
Don't allow teams to make receiving anonymous
SQL script to turn anonymous_receiving off for all organizations
update i18n files
merge branch.sql into schema.sql
Bump version to 1747
reduce schema.sql
Merge pull request #3013 from gratipay/small-oauth-fixes

Small OAuth fixes.
Merge pull request #3008 from gratipay/fix-js-sign-out

Fix JS sign-out
Added test
Merge pull request #2986 from gratipay/fix-team-anonymous-receiving

Fix anonymous receiving for teams
merge branch.sql into schema.sql
Bump version to 1748
fix tests
remove dump file at the end of the test