[Util] Added DetectFileMime().
[DeadLyrics] Disallow HTTP pipelining (dunno, maybe helps).
[Imgaste] Support uploading local files.
[Blasq] Better code.
[Interfaces] Refer to IDataFilter in IWebFileStorage.
[Poshuku] Slightly better code in PasswordRemember.
[Poshuku] Stlize.
[Interfaces] Nice IPluginsManager template methods code.
[Poshuku] Removed unused function.
[Util] Always use std::shared_ptr for now for MakeScopeGuard.
[Poshuku] Removed unused code.