Redesigned Main menu and expense/income windows

The main menu has been redesigned. Same goes for expense and income scenes which now are the same one. Also redesigned budget scene

requested review from @andreksv

assigned to @andreksv

added 3 commits

• 8b2872fb...757d85dd - 2 commits from branch master
• 45033026 - Merge branch 'master' into 'frontend-testing'

Compare with previous version

closed