Litecoin: add default server glacialsoftware.net
display dates in invoices tab
fix: store key of invoices for retrieval
show txid in invoice details
fix: update commands with new transaction constructors
updates for gtk gui
move master_private_keys and master_public_keys to NewWallet
load imported_keys outside of load_accounts
load_transactions
rm get_address_flags (no longer used)
rm dead code
fix get_pubkeys call
get_seed -> check_password
fix: check if wallet has master_private_keys
Merge remote-tracking branch 'upstream/master'

Conflicts:
	gui/gtk.py
	lib/wallet.py