don't allow user to copy receive from addresses

receive addresses may be from shared wallets, and are always already used with their pubkey exposed, sending money to receive from addresses is intuitive but dangerous
handling of unsigned and partially signed transactions
sync percentage
txid endianness, fixes #50 ... doh
consistency check to make sure keychain and core data match, they can diverge since they have different access and backup policies, fixes #49, fixes #51
use j instead of h for date format, remove potential zero padding of hour, fixes #55
switch back to testnet
improved international date/time handling, fixes #55
label from addresses as "spent address" and make non-selectable to discourage address reuse and possibly mistakenly sending funds back to a shared wallet address
use correct version string for useragent
alert and text formatting
better fee removal option description
reverted to delayed content touches for pageview, fixes #54
tip bubble edit
more explanatory jailbreak warning, people seem to think a pin protects them
delay action to show button highlight
revert to DNS peer discovery after max_connect_failures attempts
switch back to testnet
show clipboard address on pay to clipboard button, resolves #23
editable clipboard textview, resolves #23 better