fix: height()
Merge pull request #332 from rdymac/translations-and-fixes

Translations, fixes, line breaks and blank spaces
fix parameters in mktx_from_account
add label to new contact dialog
update_account_selector
add new tray icon, and activate window in showNormal
move pending accounts logic into wallet.py
enforce 'chain' parameter in wizard
bug fix: seed_version
fix bug with chunk requestor