Add persistent automatically loaded history file for repl console
and Embark dashboard.
Default location of the history file is stored in DEFAULT_CMD_HISTORY_PATH
pointing to DAPP_PATH/.embark/cmd_history.
The history is automatically saved and loaded on startup.
test/console: Pass Embark object to constructor.
Update console test to pass Embark object to constructor.
Refs: https://github.com/embark-framework/embark/issues/939
Anthony Laibe
Cryptomental
emizzle
Jonathan Rainville