observation webservice: log request data on failure
show webservice validation error as warning in log
fix typo
let pgsql create primary keys on update instead of calling nextval()

although it shouldn't be possible, the usage of nextval() lead to duplicate key on linsert in webservice_observation. removing nextval to allow simultanous iphone uploads.
ignore idea stuff
create new module "project" and test dbschema script
Merge branch 'projects' of github.com:naturwerk/naturvielfalt into projects