Improved the view dupl_sources [skip hazardlib]
Improved the view dupl_sources [skip hazardlib]


Former-commit-id: cd5a3501dcd7e67b53940dddd3b97d427874301f [formerly 74213ad9f00f3b1dc76c91f1a540e53eacc95a2c] [formerly 74213ad9f00f3b1dc76c91f1a540e53eacc95a2c [formerly 980b9461e337fb2a85bed10c36c875716111cf55]]
Former-commit-id: 811f9fae5e32cc21ea3793df8f08f89dde70215d
Former-commit-id: c04f3770e7c08ae51a01542be73a210ffd5e75ce
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine