fix bug from bug fix (gorse-io#305)

set custom cache path for docker compose

pull latest dataset after data import (gorse-io#274)

fix CTR computation on Mongo

new task scheduler

change version to v0.2.3

change version name to v0.2.2

fix test

recover from cache lost

Merge pull request gorse-io#134 from zhenghaoz/hotfix

implement data import via HTTP