Added commands and store actions logging

Cherry-Picked-From: d8d70bfc195747c020f46ac82f3a38ec1f894349

Pick notes:
We also import pootle_misc.log instead of pootle_misc.log.<action>
to make things more readable.

Invalidates:
  bbb2ffaba090e85aae7b634de6fc19c574bccc9a
  79d68bdfc3fa2d6e22e31c4b95b9530a8e3198b3
  0388d6862119f45932936c580281b1f88c63f942
  45cf6acb49951db96d51c96340290485cb717e30
  c114e0a44c278723d500aac2ebddcd61593702e8