Use the new value of avi mime type in test
Clear file from cache in CDirectory::Remove()
Only append filename to strDestFile when not a folder
Change to use IsWindowsVersionAtleast(..)
Restructure CFileOperationJob::DoProcess(..)
Remove DownloadQueue & DownloadQueueManager
Remove broken usage of CSettingsCategory & CSettings
Merge pull request #2752 from Rawk/fix_broken_gtest

Fix gtests for SystemInfo, Mime, DownloadQueue and Directory