Implicit accept on same-domain navigation in childframe will signal parent frame.

 * preparing for handling of implicit accept propagation from iframe to parent
 * Extracting Tracker collection and logic to TrackerManager
 * adding addTrackers (pl.) to TrackerManager
 * moving iframemsghandling into iframecommunicator
 * Added tests for iframeCommunicator
 * IFrameCommunicator is now complete and ready for manual tests.
 * Refactoring so effective that we are back to square one. But with tests.
 * cleanup
 * Upgrading travis nvm version to 0.10
 * using CookiePrompter.log() in TrackerManager
 * child telling parent to accept all and close prompt when same domain navigation occors