switch default display to mBTC
no accounts in multisig wallets
Add block explorer setting for "view online"
Merge pull request #667 from wozz/blockexplor

Add block explorer setting for "view online"
get_master_public_keys
Merge branch 'master' of git://github.com/spesmilo/electrum
dark/light icon selector. see #666
fix: get_master_public_key
move tray logic to ElectrumGui object. fixes #468
rm dead code
watching_only wallets have a single account
gui: don't show account names if there is only one account
Merge remote-tracking branch 'upstream/master'

Conflicts:
	gui/qt/main_window.py
Litecoin: switch default display back to LTC