Add more tests keys and instructions in README
Merge branch 'gustav/contracts7'

* gustav/contracts7:
  Add more tests keys and instructions in README
Add Bj mocking by default and correct signing state
Merge branch 'gustav/contracts8'

* gustav/contracts8:
  Add Bj mocking by default and correct signing state
Add base58 encoding function
Add test key generation functions

* Add bitcoin-tool as dependency and custom make target for copying
  its built binary to mw priv folder
* Add test key generation for RSA 2048
* Add test key generation for bitcoin EC
Merge branch 'gustav/contracts8'

* gustav/contracts8:
  Add test key generation functions
Dev commit. Squash this commit in later rebase
Add setup function for world cup events

* Change match number in events table so it can be null -
  we'll add links to matches rows later on with more details
* Add setup function which generates and inserts oracle_keys and
  events rows for each world cup bet generated by mw_setup:results/1
* Add quick hack to scale setup function on multicore
Merge branch 'gustav/contracts9'

* gustav/contracts9:
  Add setup function for world cup events
  Dev commit. Squash this commit in later rebase
Merge branch 'dev'
wip
Merge branch 'master' into dev
wip: curl no content for POST