Add 'Calculate' link in the navbar
Add 'Calculate' link in the navbar


Former-commit-id: d067c76f3629edecf1488a1d957ab30864459f5b [formerly 205ae3e82ccb51827264a25221d97a0b95846049]
Former-commit-id: d61809e11607a3f3e51587695090383b30d5428e
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine