[#42] Support for embedding nREPL server
[#42] Fix extra blank
[#42] Adds Timbre logging library

* Code cleanup - removes trailing spaces
[#42] Adds log namespace with helper functions

* Recover log4j.properties (used by the java code)
* log namespace has 2 helper functions to set debug|info levels
[#42] Add some logging to bulk and raw data upload
Merge pull request #45 from akvo/issue/42

Implement logging via Timbre