compact serialized format for unsigned and partially signed transactions.
cleanup (dead code)
print traceback in waiting dialog
fix add_keypairs: support old wallets
serialize: do not use x_pubkeys if we have enough signatures.
help text for signrawtransaction
getmpk: return list of accounts
show number of tx signatures in gui
fix: edit label
message: cosigner wallet
Merge remote-tracking branch 'upstream/master'

Conflicts:
	lib/commands.py