Properly propagate the error code from oq webui
Properly propagate the error code from oq webui


Former-commit-id: 2e2d7db22753ba419b4b48893d37dcc8329140cd [formerly 2e2d7db22753ba419b4b48893d37dcc8329140cd [formerly c10254bf4f9b7731eb829b3ae4396dcd583682cb]]
Former-commit-id: 466e97de665d3ca38136c50eb203b0e326105e35
Former-commit-id: aca5b953e27bd447dcebe30d6c5bc80826356f38
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine