sql/pgq: fix retry-queue vs. newgrants
deb: include data_maintainer3 in package
londiste.handlers.dispatch: fixed "ignore events aiming at obsolete partitions" bug
debian/changelog: updated
Merge branch 'hotfix/3.1.5.3'
Merge branch 'hotfix/3.1.5.3' into develop

Conflicts:
	debian/changelog
Merge branch 'master' into develop
debian/changelog: updated