Updated project files
Disable tool bar button if they cannot be used
Use dock widgets
Added Transactions dock widget
Renamed OrderWidget to OrdersWidget
Added transactions widget
Made transaction list work
Optimized default header layout
Corrected displayed amount value in transaction list
Renamed "Balance" in transaction list to "Total"
Display closed orders as closed and not as "canceled"
Added log widget
Added more log messages
Improved about box
Renamed cancel icon
Added log message icons and auto scrolling
Added submit/cancel log messages
Do not vertical title bars
Improved error handling, fixed sell amount limit not working properly