Set BaseSource.weight to 0
Set BaseSource.weight to 0


Former-commit-id: 9281d4ceb2da4b37492da327f57657d507a63a34 [formerly 163316edeb6ed57ab36ec9d6be0b61f564c0203e]
Former-commit-id: 817065a0d66d8f9ccce758756491cd49c559e27c
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine