fixed #269: Making main window logo 50% transparent
Merge pull request #276 from michalx2/master

Fix CantStartSingleInstanceException
fixed #263: Task completed and error sound
fixed #277: Default task settings problem
fixed #278: Fixed custom uploader input issue
Task settings window auto fill description when changing tasks
fixed #279: Added client rectangle to window/control enumeration in region capture
ScreenRecorderUseActiveWindow setting not necessary anymore because region selection allows selecting client rectangle
fixed #272: Error handling for stopping FTP uploads
Handle startup issues