- re-work change address handling so that default is CNoDestination(),
until a verified and known change address was entered (easier code flow)
- add a missing NULL pointer check for adresstablemodel
- add a missing text when opening coin control address selection for
priority and ensure the label is black
- add a missing . at the end of a sentence
- remove style sheets from ui files and use Qt attributes instead
- make some more strings untranslatable, to make life for translators
easier
- split up long tooltips an rework the texts a little
- add missing license headers
- make compatible with Qt5
- enforce header cleanup style
- small code style cleanups
- rename Coin Control dialog into Coin Control Address Selection
- use default font for the windows labels (no monospace)