scheduler front in element, removed scheduler to dashboard. need tests
fix element CRUD and dashboard refresh by element ok
Merge pull request #157 from avelino/refresh_by_element

Refresh by element
Merge branch 'master' of https://github.com/avelino/mining into cube_merge

* 'master' of https://github.com/avelino/mining:
  fix element CRUD and dashboard refresh by element ok
  scheduler front in element, removed scheduler to dashboard. need tests
Merge branch 'cube_merge' of https://github.com/avelino/mining into cube_merge

* 'cube_merge' of https://github.com/avelino/mining:
  fix PEP8