Fixed some URIs of the calculate tab

The hazard/risk unification in https://github.com/gem/oq-engine/pull/1594 involves the following URI changes:

/v1/calc/(hazard|risk)/[id] -> /v1/calc/[id]
/v1/calc/(hazard|risk)/[id]/results -> /v1/calc/[id]/results
/v1/calc/(hazard|risk)/result/[id] -> /v1/calc/result/[id]
/v1/calc/(hazard|risk)/run -> /v1/calc/run