Added currency parameters to TxOutLayout to allow for different currency units.
numberformats WIP
numberformats regexp tested
WIP
Fixed file filter for account import.
Update sync height when block fetching begins.
Pulled currency validation regexp out of numberformats and created CurrencyValidator class.
Allow one leading zero in whole part of CurrencyValidator.
Version 0.4.3
Disallow removing outputs when there's only one left.
Fixed CreateTxDialog resize issue when removing outputs.
Only enable removing outputs from CreateTxDialog when there are more than one.
Updated copyright notice in README.
Version 0.4.4
Merge branch 'develop'