Update schema.rb to correct problem "ActiveRecord::StatementInvalid: Mysql2::Error: BLOB/TEXT column 'tags' can't have a default value:" when we migration on mysql database

Refs #107

The region selector is back on the top page, but right under the related country's flag

Looking a bit further, it does seem there remained the "lug" terminology in the database and test fixtures.

Renamed.

Refs #85

This replaces the "application" directory where were stored some common static pages

Organisations can now have a detailed place name and address, plus a specific geocoded localisation. Refs #71