Bugfix in extend_chain logic when no checkpoints exist
Fix wallet_import_private_key regression test
Fix typos
Update qt_wallet for chain_server branch
can set account as favorite without explicitly adding it first
Merge branch 'master' into develop
Fix filtering history by account name for shorts
Merge branch 'develop' of github.com:BitShares/bitshares_toolkit into develop
Fix wallet::account_set_favorite
Clarify that short proceeds go to cover in history
Fix asset overflow checks; log exceptions during wallet scanning

The overflow checks in asset addition and subtraction were invalid,
causing false positives (errors when no overflow had occurred) and false
negatives (it is impossible to safely detect a signed overflow after the
fact). These checks have now been replaced with precondition checks,
which determine whether an overflow will occur without ever actually
causing one.

Also, add logging of exceptions during wallet scanning (which is how I
detected the bad overflow checks in the first place)
Fix asset overflow checks; log exceptions during wallet scanning

The overflow checks in asset addition and subtraction were invalid,
causing false positives (errors when no overflow had occurred) and false
negatives (it is impossible to safely detect a signed overflow after the
fact). These checks have now been replaced with precondition checks,
which determine whether an overflow will occur without ever actually
causing one.

Also, add logging of exceptions during wallet scanning (which is how I
detected the bad overflow checks in the first place)
Merge branch 'develop' of github.com:BitShares/bitshares_toolkit into develop
Merge branch 'develop' of github.com:BitShares/bitshares_toolkit into develop
Fix market cancel orders in transaction history
Do not throw exception when trying to pretty-print invalid percentages
Wallet does not allow publishing negative price feeds (resolves #607)
Fix missing_signature error in wallet_publish_slate (resolves #612)
Fix transaction scanning for pseudonymous transactions to yourself
(resolves #611)
Fix transaction rescan bug