This runs clang-tidy on some other files in launcher/net/.
This also makes use of some JSON wrappers in HttpMetaCache, instead of
using the Qt stuff directly.
Lastly, this removes useless null checks (crashes don't occur because of
this, but because of concurrent usage / free of the QByteArray pointer),
and fix a fixme in Download.h
- Modified PasteUpload task to upload the log file to 0x0.st and other
services with the same protocol.
- Modified Paste settings UI to allow the user to select a custom paste
URL, simplified the settings page code.
