Make all ITs using bitcoin funds to wait for it

Peers need some time to download the block chain before recognizing
their current balances.
Merge pull request #123 from sortega/fixes

War on heisenbugs
Merge pull request #124 from sortega/fix-its

Make all ITs using bitcoin funds to wait for it
Fix OpenOrdersTest
Fix QuoteTest
Avoid being spammed by netty logging on coinffeine-gui
Merge pull request #125 from sortega/fix_it

Fix integration tests