Make lint target reliable
Make lint target reliable

Previously only the files newer than the timestamp were passed to
the linter.

Changing the linter config or version did not trigger a lint of all
the files.

With this commit, all files are linted on changes.

camptocamp/ngeo,adube/ngeo,camptocamp/ngeo,camptocamp/ngeo,adube/ngeo,adube/ngeo,camptocamp/ngeo,camptocamp/ngeo,adube/ngeo