Import required class to unpickle properly
Revert
Pass to job send_mail dicts with mail data
Remove unused import
Fix test
Merge branch 'master' into issue-pickle-mail

* master: (26 commits)
  Fix tests.
  Refactor timeouts.
  Add a longer timeout.
  Update docs
  Typo
  Exclude code from coverage.
  Exclude code.
  Tests.
  Refactor.
  Remove commented code.
  Refactor
  Refactor.
  Refactor.
  Exclude code from coverage.
  Test for non pro users.
  Tests for app stats.
  Exclude from coverage because those functions are tested outside here.
  Restore value for interval.
  Fix tests for new specs.
  Add interval to each function to customize its interval.
  ...

Conflicts:
	pybossa/jobs.py
Typo
Merge pull request #941 from PyBossa/issue-pickle-mail

Issue pickle mail